Testing methodologies of refrigerating devices for insulated means of transport - Part 1: Mechanical cooling device with forced air circulation evaporator with or without heating device

This European Standard applies to mechanical cooling devices with air circulation heat exchangers with or without heating device. The mechanical cooling devices are intended to be used with insulated transport equipment. They include a drive or a means of force transmission and are provided with all the components necessary for the controlled thermal transport system. The mechanical cooling devices can be powered with independent engine and/or vehicle engine and/or any other source of energy. This standard specifies the testing methodologies.

Leistungs- und Funktionsprüfung von Kühleinrichtungen für wärmegedämmte Beförderungsmittel - Teil 1: Transportkältemaschinen mit zwangsbelüftetem Verdampfer mit oder ohne Heizeinrichtung

Dieses Dokument gilt für mechanische Kühleinrichtungen mit oder ohne Heizeinrichtung, die mit Wärmetauschern mit Luftumwälzung arbeiten. Die mechanischen Kühleinrichtungen sind für die Anwendung in wärmegedämmten Transportmitteln vorgesehen. Sie besitzen einen Antrieb oder ein Kraftübertragungs¬mittel und sind mit allen für ein geregeltes Wärmeübertragungssystem erforderlichen Bauteilen ausgerüstet. Die mechanischen Kühleinrichtungen können mit einem unabhängigen Motor und/oder mit dem Verbrennungsmotor des Transportfahrzeugs und/oder mit einer beliebigen anderen Energiequelle angetrieben werden. In dieser Norm werden die Prüfverfahren festgelegt.

Méthodes d’essai des appareils de réfrigération pour moyens de transport isothermes - Partie 1 : Systèmes de réfrigération mécanique avec évaporateur à circulation d’air forcée ou convection et dispositifs de chauffage optionnels

La présente Norme européenne s’applique aux dispositifs de réfrigération mécanique avec échangeurs de chaleur à circulation d’air, avec ou sans dispositif de chauffage. Les dispositifs de réfrigération mécanique sont destinés à être utilisés avec un équipement de transport isotherme. Ils comprennent un mécanisme d’entraînement ou un moyen de transmission de puissance et sont équipés de tous les composants nécessaires au système de transport thermique contrôlé. Les dispositifs de réfrigération mécanique peuvent être alimentés par un moteur indépendant et/ou par un moteur de véhicule et/ou par toute autre source d’énergie. La présente norme spécifie les méthodes d’essai.

Metodologije za preskušanje hladilnih naprav za toplotno izolirana transportna sredstva - 1. del: Mehanične hladilne naprave z uparjalnikom s prisilnim kroženjem zraka z grelno napravo ali brez nje

Ta evropski standard se uporablja za mehanske hladilne naprave s toplotnimi izmenjevalniki za kroženje zraka z grelno napravo ali brez nje. Mehanske hladilne naprave so namenjene uporabi z izolirano transportno opremo. Vključujejo pogon ali sredstvo za prenos sile ter imajo vse potrebne komponente za nadzorovani toplotni transportni sistem. Mehanske hladilne naprave se lahko napajajo z neodvisnim motorjem in/ali motorjem vozila in/ali katerim koli drugim virom energije. Ta standard določa preskusne metodologije.

General Information

Status
Published
Publication Date
04-Mar-2015
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
20-Feb-2015
Due Date
27-Apr-2015
Completion Date
05-Mar-2015

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Leistungs- und Funktionsprüfung von Kühleinrichtungen für wärmegedämmte Beförderungsmittel - Teil 1: Transportkältemaschinen mit zwangsbelüftetem Verdampfer mit oder ohne HeizeinrichtungMéthodes d’essai des appareils de réfrigération pour moyens de transport isothermes - Partie 1 : Systèmes de réfrigération mécanique avec évaporateur à circulation d’air forcée ou convection et dispositifs de chauffage optionnelsTesting methodologies of refrigerating devices for insulated means of transport - Part 1: Mechanical cooling device with forced air circulation evaporator
with or without heating device27.200Hladilna tehnologijaRefrigerating technologyICS:Ta slovenski standard je istoveten z:EN 16440-1:2015SIST EN 16440-1:2015en,fr,de01-april-2015SIST EN 16440-1:2015SLOVENSKI
STANDARD



SIST EN 16440-1:2015



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16440-1
January 2015 ICS 27.200 English Version
Testing methodologies of refrigerating devices for insulated means of transport - Part 1: Mechanical cooling device with forced air circulation evaporator with or without heating device
Méthodes d'essai des appareils de réfrigération pour moyens de transport isothermes - Partie 1 : Systèmes de réfrigération mécanique avec évaporateur à circulation d'air forcée ou convection et dispositifs de chauffage optionnels Prüfung von Kühleinrichtungen für wärmegedämmte Transportmittel - Teil 1: Transportkältemaschinen mit zwangsbelüftetem Verdampfer mit oder ohne Heizeinrichtung This European Standard was approved by CEN on 3 October 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16440-1:2015 ESIST EN 16440-1:2015



EN 16440-1:2015 (E) 2 Contents Page Foreword .4 1 Scope .5 2 Normative references .5 3 Terms and definitions, symbols and uncertainties .5 3.1 Terms and definitions .5 3.2 Symbols and uncertainties .9 4 Requirements . 11 4.1 Tested appliance description . 11 4.2 Test equipment . 11 4.2.1 General requirements . 11 4.2.2 Requirements for the calorimeter box . 12 4.2.3 Requirements for the conditioned test room . 12 4.3 Installation and connection of the cooling device . 12 4.3.1 General . 12 4.3.2 Installation of cooling device with locally separated components (split system) . 12 5 Test conditions and methodology . 13 5.1 General . 13 5.2 Test conditions . 13 5.2.1 Test conditions for measuring the cooling capacity PC . 13 5.2.2 Test conditions for measuring the heating capacity PH . 13 5.2.3 Test condition for measuring the total energy consumption ET . 14 5.3 Temperature measurements . 14 5.3.1 Temperature of the conditioned test room Te . 14 5.3.2 Inside temperature of the calorimeter box Ti . 15 5.3.3 Air temperatures of the cooling device . 15 5.4 Cooling capacity PC . 15 5.5 Heating capacity PH . 15 5.5.1 Electric heating device . 15 5.5.2 All heating devices . 16 5.6 Performance testing under rated conditions . 17 5.6.1 General . 17 5.6.2 Provisions for cooling devices driven by vehicle engines . 17 5.6.3 Heat transmission PTR through the calorimeter box . 19 5.6.4 Steady-state conditions under rated conditions . 19 5.6.5 Energy consumption measurements. 19 5.6.6 Measurement of the maximum cooling capacities and energy consumption at full load . 20 5.6.7 Measurement of energy consumption under rated conditions at part load . 20 5.6.8 Measurement of heating capacity and energy consumption . 21 5.7 Air flow measurement . 21 5.8 Rotation speed measurements . 21 5.9 Time measurement . 22 5.10 Functional tests . 22 5.10.1 Cooling-down test. 22 5.10.2 Defrosting test . 22 6 Test results . 22 6.1 General . 22 6.2 Energy efficiency ratio determination . 24 6.2.1 General . 24 SIST EN 16440-1:2015



EN 16440-1:2015 (E) 3 6.2.2 Determination of the cooling energy efficiency ratio EERC . 24 6.2.3 Determination of the heating energy efficiency ratio EERH . 24 7 Test report . 24 Annex A (informative)
Examples . 26 Annex B (informative)
Explanation with regard to reference speeds for different vehicle engines . 27 Annex C (informative)
Total efficiency of the power chain of electric and hybrid vehicles . 33 Annex D (normative)
Determination of energy and fuel consumption for cooling devices . 34 D.1 Determination of energy and fuel consumption for dependent cooling devices . 34 D.2 Determination of fuel consumption for independent cooling devices . 35 Annex E (informative)
Heating device test methodologies . 36 E.1 General . 36 E.2 Direct refrigeration systems . 36 E.3 Indirect refrigeration system . 39 Bibliography . 40
SIST EN 16440-1:2015



EN 16440-1:2015 (E) 4 Foreword This document (EN 16440-1:2015) has been prepared by Technical Committee CEN/TC 413 “Insulated means of transport for temperature sensitive goods with or without cooling and/or heating device”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2015 and conflicting national standards shall be withdrawn at the latest by July 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16440-1:2015



EN 16440-1:2015 (E) 5 1 Scope This European Standard applies to mechanical cooling devices with air circulation heat exchangers with or without heating device. The mechanical cooling devices are intended to be used with insulated transport equipment. They include a drive or a means of force transmission and are provided with all the components necessary for the controlled thermal transport system. The mechanical cooling devices can be powered with independent engine and/or vehicle engine and/or any other source of energy. This standard specifies the testing methodologies. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 228, Automotive fuels - Unleaded petrol - Requirements and test methods EN 589, Automotive fuels - LPG - Requirements and test methods EN 590, Automotive fuels - Diesel - Requirements and test methods EN ISO 5801, Industrial fans - Performance testing using standardized airways (ISO 5801) EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025) ISO/IEC Guide 99:2007, International vocabulary of metrology - Basic and general concepts and associated terms (VIM) 3 Terms and definitions, symbols and uncertainties 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC Guide 99:2007 and the following apply. 3.1.1 air volume flow
VA volume flow delivered by the fans in the evaporator unit 3.1.2 calorimeter box thermally insulated room in which the evaporator unit of the cooling device is placed Note 1 to entry: A calorimeter box can also be substituted by a suitable thermally insulated means of transport. 3.1.3 compressor/condenser unit part of the cooling device including compressor, condenser, fans, housing, drives (electric motor, internal combustion motor, hydraulic engine and similar) and the operating panel with the control devices SIST EN 16440-1:2015



EN 16440-1:2015 (E) 6 3.1.4 conditioned test room room where the test conditions can be maintained at a constant level and in which the calorimeter box with the cooling device is mounted 3.1.5 cooling capacity PC capacity available with a defined heat load PHL in the insulated means of transport, determined under rated conditions 3.1.6 cooling cycle period starting with switching OFF the compressor and finishing with the successive switching OFF of the compressor 3.1.7 cooling device system which lowers and/or maintains temperature Note 1 to entry: In this European Standard, the cooling device is a compression cooling device intended to be installed and/or mounted into insulated means of transport, which refrigerates the interior of the means of transport. 3.1.8 cooling energy efficiency ratio EERC ratio of the cooling capacity PC to the total power PT of the cooling device under rated conditions 3.1.9 cooling load PCL heat flow discharged from the calorimeter box during the determination of the heating capacity deducting the power of cooling coil fan(s) 3.1.10 dependent cooling device refrigeration unit with compressor driven by the vehicle engine either directly or indirectly EXAMPLE
For indirectly: belt or hydraulic transmissions, alternators, etc. supplied by the refrigeration unit manufacturer or electrically driven units powered by the electrical system of the vehicle. 3.1.11 evaporator unit part of the cooling device including evaporator, fans, housing, expansion and control valves and, if appropriate, defrosting device 3.1.12 full load operation of the cooling device at maximum capacity under steady state conditions 3.1.13 heating capacity PH capacity available with a defined cooling load PCL in the insulated means of transport, determined under rated conditions 3.1.14 heating device system which increases and/or maintains temperature SIST EN 16440-1:2015



EN 16440-1:2015 (E) 7 3.1.15 heating energy efficiency ratio EERH ratio of the heating capacity PH to the total power PT of the cooling device under rated conditions 3.1.16 heat load PHL heat flow delivered into the calorimeter box by electric heating elements and their fans during the determination of the cooling capacity PC 3.1.17 heat transmission PTR heat flow through the insulated limiting surfaces of the calorimeter box 3.1.18 HV and EV cooling device refrigeration unit with compressor driven electrically in hybrid vehicles (HV) or electric vehicles (EV) Note 1 to entry:
The HV and EV refrigeration units can be driven by the electrical system of the vehicle or by a separate independent battery pack. 3.1.19 idling speed rotational speed of engine when the vehicle stands still, the engine is uncoupled and generates less power but enough
to run reasonably smoothly and operate its ancillaries
Note 1 to entry:
Accessories are water pumps, alternator, and, if equipped, other accessories such as air conditioning or power steering. Note 2 to entry:
If the power of the engine in idling speed for example is not sufficient for the operation of all accessories, particularly the transport refrigeration unit, the idle speed can be raised. 3.1.20 independent cooling device refrigeration unit with compressor driven by an independent power unit like a diesel engine or a fuel cell, etc. 3.1.21 inlet air temperature at the compressor/condenser unit TIN CON mean temperature of different measuring points located at air inlets of the compressor/condenser unit 3.1.22 inlet air temperature at the evaporator unit TIN VAP mean temperature of different measuring points located at air inlets of the evaporator unit 3.1.23 inside temperature of the calorimeter box Ti arithmetic mean temperature measured at different locations inside the calorimeter box 3.1.24 insulated transport equipment insulated vans, bodyworks for trucks and trailers, swap bodies, any kind of mobile containers and railway wagons SIST EN 16440-1:2015



EN 16440-1:2015 (E) 8 3.1.25 operating time to period of time between the switching on and the switching off of the cooling device compressor 3.1.26 outlet air temperature at the evaporator unit TOUT VAP mean temperature of different measuring points located on the air outlet of the evaporator unit 3.1.27 part load operation of the cooling device under thermostatic control with fixed load 3.1.28 rated conditions obligatory conditions laid down for marking, comparison and certification purposes 3.1.29 stable condition test operation in which the test condition measured values remain within the specified ranges and without any permanent tendency during the defined time period and in which the measured system parameters remain cycling regularly both in amplitude and period 3.1.30 standby operation refrigeration unit operating connected to a power source external to the vehicle EXAMPLE Operation on an electrical network, etc. 3.1.31 steady state conditions test operation in which the measured values remain within the specified ranges and without any permanent tendency during the defined time period 3.1.32 temperature of the conditioned test room Te mean temperature of different measurement points located outside the calorimeter box (in the conditioned test room) 3.1.33 total energy consumption
ET energy consumption of all components necessary for operation of the cooling device under rated conditions Note 1 to entry:
Example of energy: fuel or electricity. 3.1.34 total power
PT power input of all components necessary for operation of the cooling device under rated conditions SIST EN 16440-1:2015



EN 16440-1:2015 (E) 9 3.1.35 wall temperature TW arithmetic mean of the inside temperature of the calorimeter box Ti and the temperature of the conditioned test room Te 2iwTTT+=e
in °C (1) 3.1.36 working speed defined value representing a commonly accepted speed related to the operational speed range of the vehicle engine 3.2 Symbols and uncertainties For the purposes of this document, the symbols and uncertainties given in Table 1 apply. SIST EN 16440-1:2015



EN 16440-1:2015 (E) 10 Table 1 — Symbols and uncertainties Symbol Measured quantity Unit Uncertainties cp specific heat J/kg K - EERC cooling energy efficiency ratio W/W or Wh/l ±7 % EERH heating energy efficiency ratio W/W or Wh/l ±7 % ET total energy consumption Wh ±5 % hin enthalpy of the refrigerant used for the cooling load at the inlet of the calorimeter box J/kg - hout enthalpy of the refrigerant used for the cooling load at the outlet of the calorimeter box J/kg - PC cooling capacity W ±5 % PH heating capacity W ±5 % PHL heat load W ±1 % PCL cooling load W ±3 % Pelec measured electrical power W ±3 % Pfan power to the fans of the cooling or heat load W ±3 % Pmech measured mechanical power W ±3 % PT total power W ±1 % PTR heat transmission W ±3 % qm mass flow of the refrigerant in the coil used for the cooling load kg/s ±1 % qv volume flow of the secondary refrigerant in the coil used for the cooling load m3/s ±3 % Te temperature of the conditioned test room °C ±0,5 K Ti inside temperature of the calorimeter box °C ±0,5 K TIN CON inlet air temperature at the compressor/condenser unit °C ±0,5 K TIN VAP inlet air temperature at the evaporator unit °C ±0,5 K TOUT VAP outlet air temperature at the evaporator unit °C ±0,5 K Tw wall temperature °C ±1 K Tin temperature of the secondary refrigerant at the inlet of the calorimeter box °C ±0,5 K Tout temperature of the secondary refrigerant at the outlet of the calorimeter box °C ±0,5 K to operating time s ±0,5 % VA air volume flow m3/h ±5 % Gen=generator efficiency
±3 % Bat=battery efficiency
±3 % NOTE The uncertainties are either the maximal measurement uncertainties for the measured quantity or the uncertainties in the determination of quantities when those are calculated.
SIST EN 16440-1:2015



EN 16440-1:2015 (E) 11 4 Requirements 4.1 Tested appliance description The overall height, length and width of the evaporator unit and of the compressor/condenser unit as well as the installation or mounting dimensions shall be specified by the manufacturer. Energy supply lines and removable handles are not considered. Moreover, all dimensions of the components that are required for assessing the cooling device shall be determined. 4.2 Test equipment 4.2.1 General requirements The testing equipment shall be so equipped that all requirements of this standard for setting of reference values, stability criteria and accuracy shall be fulfilled. The measuring uncertainty shall not exceed the values specified in Table 2. Table 2 — Measuring uncertainty Measuring quantity Unit Measuring uncertainty Air —
temperature —
air pressure —
air flow rate
°C Pa m3/h
±0,3 K ±1,0 % ±5,0 % Refrigerant —
pressure —
temperature —
mass flow rate
Pa °C kg/s
±1,0 % ±0,5 K ±1,0 % Electrical quantities —
electrical performance —
voltage —
current —
energy
W V A kWh
±0,5 % ±0,5 % ±0,5 % ±0,5 % Secondary refrigerant —
temperature —
volume flow
°C m3/s
±0,2 K ±0,5 % Fuel consumption —
volume flow —
consumption (mass)
l/h kg/h
±1,0 % ±1,0 % Rotational speed min−1 ±0,5 % Torque Nm ±2,0 % Time s ±0,5 %
SIST EN 16440-1:2015



EN 16440-1:2015 (E) 12 The cooling capacity Pc or heating capacity PH under steady-state conditions shall be so determined that the maximum measuring uncertainty does not exceed 5 %, irrespective of individual uncertainties due to fluid characteristics. Testing laboratories should be in line with EN ISO/IEC 17025. All measuring systems used for testing shall be calibrated at regular intervals. Air temperature sensors shall be protected against radiation when necessary. 4.2.2 Requirements for the calorimeter box The heat transmission PTR of the calorimeter box shall be kept to a minimum and not exceed 35 % of the measured cooling capacity PC or heating capacity PH according to 5.6.6 or 5.6.8. The leak rate of the calorimeter box shall not exceed 0,25 m3/hm2 under an overpressure of 250 ± 10 Pa. The maximal deviation of the measured inlet air temperatures at the evaporator unit according to 5.3.3.1 of any two temperature sensors shall be lower than 3 K, at any time. The measurement of temperature shall be carried out with an uncertainty not greater than the uncertainties defined in Table 1. The electric heating system in the calorimeter box shall not exceed the specific heat load of 1 W/cm2 in steady-state conditions. The distance between the electric heating system and the ceiling, floor and walls shall be at least 100 mm. 4.2.3 Requirements for the conditioned test room The size of the conditioned test room and the size of the calorimeter box shall be selected so that air stream cannot be obstructed at the air inlets and outlets of the cooling device. Therefore, when the cooling device is switched off, the room air stream velocity at a distance of 100 mm of the calorimeter box walls shall be between 1 m/s and 2 m/s in the centre of the lateral surfaces. The calorimeter box shall be set up with a distance of at least 300 mm from the floor of the conditioned test room. The air temperature of the conditioned test room shall be so regulated that the mean inlet air temperature at the compressor/condenser unit may be maintained to ± 0,5 K. At any given time the maximum difference between the temperatures of any two temperature sensors at the air inlet of the compressor/condenser unit shall not exceed 2 K. The exhaust gas suction system shall not affect the gas exhaustion of the diesel engine. 4.3 Installation and connection of the cooling device 4.3.1 General The cooling device shall be connected to the calorimeter box in compliance with the manufacturer's installation and operation instructions. Appropriate measures in the calorimeter box shall prevent any airside short circuit at the evaporator unit. 4.3.2 Installation of cooling device with locally separated components (split system) The following installation conditions shall be observed for tests of the cooling device consisting of several parts: — refrigerant piping between the locally separated parts shall be carried out in accordance with the manufacturer's specification; — refrigerant piping shall be so installed that the height difference between the highest and lowest pipe does not exceed 3,5 m; SIST EN 16440-1:2015



EN 16440-1:2015 (E) 13 — the thermal insulation of the refrigerant piping shall be carried out according to the manufacturer's specification. 5 Test conditions and methodology 5.1 General The cooling capacity PC and heating capacity PH of cooling devices are determined by measurements in a calorimeter box. To determine the cooling capacity PC, a heat load PHL shall be applied in the calorimeter box by means of electric heating elements. To determine the heating capacity PH, a cooling load PCL shall be applied in the calorimeter box by means of forced air heat exchanger. The cooling capacity PC shall be measured for at least one inlet air temperature at the compressor/condenser unit TIN CON. For each inlet air temperature at the compressor/condenser unit TIN CON, the cooling capacity shall be tested for at least three different inlet air temperatures at the evaporator unit according to the manufacturer's instructions. Measured values of the inlet air temperature at the evaporator unit TIN VAP may be interpolated but shall not be extrapolated. The heating capacity PH should be measured for at least one temperature of the conditioned test room. For each temperature of the conditioned test room the heating capacity shall be tested for at least one inlet air temperature at the evaporator unit. 5.2 Test conditions 5.2.1 Test conditions for measuring the cooling capacity PC The tests are carried out according to the application of the cooling device under the rated conditions given in Table 3 and 4: Table 3 — Reference temperatures for measuring the cooling capacity PC Inlet air temperature at the compressor/condenser unit TIN CON °C Inlet air temperature at the evaporator unit TIN VAP
°C Normal conditions: 30 Minimum temperature of the cooling device Intermediate chosen temperature between minimum and maximum temperaturea Maximum temperature of the cooling device Elevated conditions:
38 Tropical conditions:
43 a For comparison, a temperature from Table 4 shall be chosen. For additional information, see Annex A. Table 4 — Test temperatures for the transport of perishable foodstuff Inlet air temperature at the evaporator unit TIN VAP °Ca + 25 + 12 + 7 0 - 10 −20 −30 a For additional information, see Annex A. 5.2.2 Test conditions for measuring the heating capacity PH For comparison reasons the tests are carried out according to the application
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