About Calcooling

About us

Calcooling is a online software service for engineering calculation and selection of industrial products.

Our code has been created with all our dedication and inspiration to provide the user with an easy and reliable working tool.

You can use Calcooling for free according to the following terms and conditions.

This site makes use of cookies to record users preferences and to obtain statistical data in order to let us improve users experience and to provide marketing messages matching user interest.

We ask for your permission to obtain navigation statistical data in this site, according to RD-ley 13/2012.

If you continue using this application we will understand you explicitly accept the use of cookies.

If you wish to contact the Calcooling team, please send us an email to info@calcooling.com

Legal notice

The content of this software aswell as all the included documentation is protected by copyright and owned by Calcooling and/or our suppliers, customers or collaborators.

This sofware and its documentation is only available for on-line use by the users. It is STRICTLY FORBIDEN TO COPY THIS SOFTWARE IN ANY OTHER SERVER OR INTERNET LOCATION.

This software makes use of the following libraries under MIT License (MIT):
jQuery, Copyright JS Foundation and other contributors, https://js.foundation/
Chartsjs, Copyright (c) 2013-2016 Nick Downie.
Minimalect, Copyright (c) 2014 Developed by [@groenroos].

Calcooling keeps the right to modify without notice all necessary updates by changing, deleting or adding any contents or services or the way they are shown or located in our servers.

The documents and software in this site may contain technical mistakes or typing errors. Calcooling cannot guarantee the accuracy, completeness, or correctness of this content. You therefore acknowledge that you use this information exclusively under your own responsibility. Calcooling shall not be held responsible for any consequence that may arise from the use of this software.

Setup

Preferencies

Psychrometry

Propiedades del aire hmedo

C
%
m
atm
kg/kg
C
kJ/kg
C
kg/m
kJ/kgK
W/mK
Pas

Refrigerant rule

Regla

kPa(a)
C
C
kg/m
kg/m
kJ/kg
gr/mol
kPa
C
kgeq CO2/kg

Hydraulic piping

Selection

Selection parameters
W
C
C
Fluid freezing. Operation temperature is below the freezing point of the fluid.
m/h
kg/s
C
%
Pipe selection
Pa/m
Nominal diameterFluid velocityPressure lossThermal gain/loss

Calculation

Piping
mm
mm
mm
W/mK
W/m2K
m
Pressure drop check
m/s
Pa/m
High refrigerant speed: we recommend to select a larger size.
Low refrigerant speed. We recommend to select a smaller size to reduce refrigerant load.
Excessive pressure drop: we recommend to select a larger size.
thermal loss check
W/m
%
Excessive thermal loss. we recommend to increase insulation thickness.
Surface condensation check
C
C
Risk of surface condensation: We recommend to increase insulation thickness.
Load calculation
kg
OK. All checks are satisfactory.

Liquid chillers

reset

Selection

Selection parameters
W
C
C
Fluid freezing. Operation temperature is below the freezing point of the fluid.
Risk of fluid freezing. Operation temperature is very close to the freezing point of the fluid.
m/h
C
Selection filter
Models
ModelRefrigerantCooling capacityPower inputEERDim.
No units found. We have not been able to find ay result matching your selection criteria. Please, try a less restrictive search.

Calculation

Selection
Rating conditions
C
m/h
C
C
m
High room temperature. The system is working with a high suction pressure, beyond the operational limits.
Calculation error. This system cannot be calculated under these conditions. Please, review input data.
High ambient temperature. The system is working at a high condensing pressure, beyond the operational limits.
High compression ratio The system is working with a high compression ratio, beyond the operational limits.
Low room temperature. The system is working with a low suction pressure, beyond the operational limits.
High discharge temperature. The system is working with a high discharge temperature, beyond the operational limits.
Performance
W
kW
A
A
m/h
m/h
kg
W/W
Working parameters
C
C
Fluid freezing. Evaporation temperature is below the freezing point of the fluid.
kg/s
C
C
C

Dimensions

Dimensions
mm
mm
mm
kg
dB(A)

Ecodesign

Ecodesign parameters
C
kWh
According to Regulation (UE) 2016/2281 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for high temperature process chillers with rated capacity up to 400kW, shall not fall below 4,5.
According to Regulation (UE) 2016/2281 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for high temperature process chillers with rated capacity over 400kW, shall not fall below 5,0.
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for positive temperature process chillers with rated capacity up to 300kW, shall not fall below 2,58.
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for positive temperature process chillers with rated capacity over 300kW, shall not fall below 3,22.
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for positive temperature process chillers with rated capacity up to 300kW, shall not fall below 1,70.
SAccording to Regulation (UE) 2015/1095 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for positive temperature process chillers with rated capacity over 300kW, shall not fall below 1,84.
Working beyond operational limits. Under these conditions the compressor is working at a high discharge temperature. Following data is just given as a indication.
The seasonal energy performance ratio SEPR does not meet ecodesign requirements. Please, select other rating conditions or other refrigerant.
Parameters at full load and ambient temperature 35C
kW
kW
Parameters at part load and ambient temperature 25C
kW
kW
Parameters at part load and ambient temperature 15C
kW
kW
Parameters at part load and ambient temperature 5C
kW
kW
Other items

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Air coolers

reset

Selection

Selection parameters
C
%
W
C
C
Selection filter
Selected models
ReferenceCooling capacityFin spacingAir-flow rateDim.
No units found. We have not been able to find any unit matching your selection criteria. Please, try a less restrictive search.

Calculation

Selected unit
Rating conditions
C
%
C
C
m
Performance
W
W
m/h
l/h
C
%
l/s
kPa
Working parameters
C
%
W/K
m/s

Features

Physical characteristics
mm
m
l
Electrical characteristics
kW
A
Dimensions
mm
mm
mm
kg

print

Cooling pipes

Design

Cooling cycle
W
C
K
C
K
kg/s
%WARN_HIGH_DCHRG%
Cooling pipes
m
m
C
%
m
Selection
mm
mm

Suction

Tubera de gas
mm
W/mK
W/mK
High refrigerant speed: we recommend to select a larger size.
Pressure drop check
kPa
K
C
C
Excessive pressure drop: we recommend to select a larger size.
Excessive thermal loss: we recommend to increase insulation thickness.
Cooling capacity check
Rated loss of cooling capacity due to a lower refrigerant flow displaced by the compressor.
%
Rated thermal loss by air convection along the suction line.
%
Unacceptable loss of capacity: You must select a larger size.
Excessive loss of capacity: We recommend to select a larger size.
Excessive thermal loss: we recommend to increase insulation thickness.
Oil drag check
m/s
m/s
Insufficient refrigerant speed for oil drag: We recommend to select a larger size.
Surface condensation check
C
C
Risk of surface condensation: We recommend to increase insulation thickness.
OK. All checks are satisfactory.

Liquid

Liquid pipe
mm
W/mK
W/m2K
High refrigerant speed: we recommend to select a larger size.
Low refrigerant speed. We recommend to select a smaller size to reduce refrigerant load.
Pressure drop check
m/s
kPa
C
K
Risk of liquid cavitation. Excessive pressure drop may lead to flash gas in the liquid line. We recommend to select a larger size.
Cooling capacity check
%
Excessive thermal loss in subcooled liquid line. we recommend to increase insulation thickness.
Surface condensation check
C
C
Risk of surface condensation: We recommend to increase insulation thickness.
Load calculation
kg
OK. All checks are satisfactory.

Discharge

Discharge pipe
mm
W/mK
W/mK
High refrigerant speed: we recommend to select a larger size.
Pressure drop check
kPa
C
Excessive pressure drop: we recommend to select a larger size.
Oil drag check
m/s
m/s
Insufficient refrigerant speed for oil drag: We recommend to select a larger size.
OK. All checks are satisfactory.

Water-cooled condensing units

reset

Selection

Selection parameters
W
C
C
K
C
C
%WARN_LOW_T%
Selection filter
Models
ModelCompressorCooling capacityPower inputCOPDim.
No units found. We have not been able to find any unit matching your selection criteria. Please, try a less restrictive search.

Calculation

Selection
Calculation conditions
C
C
kPa
K
C
m/h
C
C
High room temperature. The system is working with a high suction pressure, beyond the operational limits.
Calculation error. This system cannot be calculated under these conditions. Please, review input data.
High ambient temperature. The system is working at a high condensing pressure, beyond the operational limits.
High compression ratio The system is working with a high compression ratio, beyond the operational limits.
Low room temperature. The system is working with a low suction pressure, beyond the operational limits.
High discharge temperature. The system is working with a high discharge temperature, beyond the operational limits.
Calculated performance
W
kW
A
A
W/W
Working parameters
C
C
C
C
kg/s
W/K
W/m2K
W/m2K
W/m2K
%
%

Dimensions

Condenser dimmensions
mm
mm
mm
kg
dB(A)

print

Air-cooled condensing units

reset

Selection

Selection parameters
W
C
C
K
C
C
Selection filter
Models
ModelCompressorCooling capacityPower inputCOPDim.
No units found. We have not been able to find any unit matching your selection criteria. Please, try a less restrictive search.%ERROR_EQ_CALC%

Calculation

Selection
Rating conditions
C
C
kPa
K
C
C
m
High room temperature. The system is working with a high suction pressure, beyond the operational limits.
%ERROR_EQ_CALC%
High ambient temperature. The system is working at a high condensing pressure, beyond the operational limits.
High compression ratio The system is working with a high compression ratio, beyond the operational limits.
Low room temperature. The system is working with a low suction pressure, beyond the operational limits.
High discharge temperature. The system is working with a high discharge temperature, beyond the operational limits.
Calculated performance
W
kW
A
A
m/h
W/W
K
Working parameters
C
C
C
C
kg/s
W/K
W/m2K
W/m2K
W/m2K
%
%
K
kPa

Dimensions

Condenser dimmensions
mm
mm
mm
kg
dB(A)

Ecodesign

Ecodesign parameters
C
The working group, responsible for the Ecodesign standards in condensing units, admits both rating conditions for cooling capacity according to prEN13215:2015
kWh
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for positive temperature condensing units with rated capacity between 5 and 20kW, shall not fall below 2.55.
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for positive temperature condensing units with rated capacity between 20 and 50kW, shall not fall below 2.65.
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for negative temperature condensing units with rated capacity between 2 and 8kW, shall not fall below 1.60.
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, seasonal energy performance ratio SEPR for negative temperature condensing units with rated capacity between 8 and 20kW, shall not fall below 1.70.%ECO_WARN_COP%
Data provided by way of indication. Under these conditions the compressor is working at a high discharge temperature. Following data is just given as a indication.imprimir
The seasonal energy performance ratio SEPR does not meet ecodesign requirements. Please, select other rating conditions or refrigerant.
Parameters at full load and ambient temperature 32C
kW
kW
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, the coefficient of performance COPA for positive temperature condensing units with rated capacity between 0.2 and 1kW, shall not fall below 1.40.
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, the coefficient of performance COPA for positive temperature condensing units with rated capacity between 1 and 5kW, shall not fall below 1.60.
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, the coefficient of performance COPA for negative temperature condensing units with rated capacity between 0.1 and 0.4kW, shall not fall below 0.80.
According to Regulation (UE) 2015/1095 with regard to ecodesign requirements, the coefficient of performance COPA for negative temperature condensing units with rated capacity between 0.4 and 2kW, shall not fall below 0.95.
The coeficient of performance COP does not meet ecodesign requirements. Please, select other rating conditions or refrigerant.
Parameters at full load and ambient temperature 25C
kW
kW
Parameters at part load and ambient temperature 25C
kW
kW
Parameters at part load and ambient temperature 15C
kW
kW
Parameters at part load and ambient temperature 5C
kW
kW
Parameters at full load and ambient temperature 43C
Data provided by way of indication. Under these conditions the compressor is working at a high discharge temperature. Following data is just given as a indication.imprimir
kW
kW
Other items

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Evaporating units

reset

Selection

Selection parameters
C
%
W
K
C
C
K
C
Selection filter
Selected models
ReferenceRefrigerantCooling capacityFin spacingAir-flow rateDT1 ev.Dim.
No units found. We have not been able to find any unit matching your selection criteria. Please, try a less restrictive search.

Calculation

Selected unit
Rating conditions
C
%
C
C
C
K
K
kPa
K
m
Performance
W
W
m/h
l/h
C
%
kg/s
Working parameters
C
%
W/K
C
K

Features

Physical characteristics
mm
m
l
Electrical characteristics
kW
A
Dimensions
mm
mm
mm
kg

print

Refrigeration units

reset

Selection

Selection parameters
C
%
C
W
Selection filter
Models
ModelRefrigerantCooling capacityPower inputCOPDim.
No units found. We have not been able to find ay result matching your selection criteria. Please, try a less restrictive search.

Calculation

Selection
Rating conditions
C
%
C
m
High room temperature. The system is working with a high suction pressure, beyond the operational limits.
Calculation error. This system cannot be calculated under these conditions. Please, review input data.
High ambient temperature. The system is working at a high condensing pressure, beyond the operational limits.
High compression ratio The system is working with a high compression ratio, beyond the operational limits.
Low room temperature. The system is working with a low suction pressure, beyond the operational limits.
High discharge temperature. The system is working with a high discharge temperature, beyond the operational limits.
Performance
W
kW
A
A
m/h
m/h
kg
W/W
Working parameters
C
C
kg/s
C
C
C

Dimmensions

Condenser dimensions
mm
mm
mm
kg
dB(A)
Evaporator dimensions
mm
mm
mm
kg
Calculate cooling connectios for this system.

Ecodesign

Ecodesign parameters
C
%
kWh
%ECO_WARN_TDESC%
Parameters at full load and ambient temperature 32C
kW
kW

print

Coldroom

reset

Start

Cold room type
mm
m
m
m
m
Application
C
Location
C
Standard calculation and selection of cooling units. Click here to select a refrigeration unit based on standard parameters.

Products

Product type
C
%
C
%
kJ/kgK
kJ/kg
kJ/kgK
Packaging
kg/kg
Product loading
kg/m
kg
%/24h
kg/24h
C
Product cooling
kg
mm
mm
mm
kg/m
W/mK
m/s
C
h
C
Product drying
%
d

Room

Location
m
C
%
C
C
Thermal insulation
m
mm
m
mm
m
mm
m
mm
Glazing
m
Insolation
kWh/m

Air renewal

Ventilation through doors
C
%
m
m
min
/24h
/24h
Controlled atmosphere
kgCO2/24h
%
m/h

Loads

Staff occupancy
W/pers
pers
Lighting
W/m
m
Door heater
W/m
m
Defrost
Fans
m/h
Pa
%
kW
Other thermal loads
kW
h/24h

Results

Cooling needs
h
kJ
kJ
kJ
kJ
kJ
h
Necessary cooling capacity
Cooling capacity for cooling new product inlet with continuous operation, with no door openings and no defrost cycles.
W
Cooling capacity to keep the room temperature with no product inlet.
W
Cooling capacity to keep the room temperature with no product inlet.
W
W
Potencia calorfica
W
Too high heat loss through panels: Heat flow through the insulation is higher than the maximum recommended values. We recommend to increase insulation thickness.
Fresh product input: the inlet temperature of goods is higher than the the freezing point.
Floor heating: Floor heating or ventilation might be needed to prevent the ground from freezing.
Insufficient floor insulation: Insufficient or no floor insulation will lead to ground freezing.
CO2 concentration: Respiration of goods will generate CO2, and its concentration will be higher than 2% if there is no atmosphere control system. Such a level of CO2 can be harmful for certain goods.
CO2 concentration: Respiration of goods will generate CO2, and its concentration will be higher than 5% if there is no atmosphere control system. Such a level of CO2 can be harmful for certain goods and is dangerous for humans. There must be a forced ventilation previous to door opening.
Superficial condensation: Insufficient insulation of the enclosure will lead to water vapour condensation on the outer face. We recommend to increase the insulation thickness.
Superficial condensation: There might be water vapour condensation on the door or window outer face. We recommend to use triple glass with double air chamber.
Superficial condensation: There might be water vapour condensation on the floor perimeter. We recommend to increase floor insulation.

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Cooling calculator

Coldroom

Coldroom

Calculation of cold rooms, process rooms, blast cooling tunnels, etc.

Refrigeration units

Refrigeration units

Calculation and selection of refrigeration units for cold rooms

Evaporating units

Evaporating units

Calculation and selection of air-cooling evaporating units operating with HFC refrigerant

Air-cooled condensing units

Air-cooled condensing units

Calculation and selection of condensing units and refrigeration plants with air-cooled condenser.

Water-cooled condensing units

Water-cooled condensing units

Calculation and selection of water-cooled condensing units

Cooling pipes

Cooling pipes

Calculation of refrigerant pipes for refrigeration split units and centralised DX systems.

Air coolers

Air coolers

Calculation and selection of air-cooling units operating with glycol water or brine

Liquid chillers

Liquid chillers

Calculation and selection of process chillers

Hydraulic piping

Hydraulic piping

Calculation of hydraulic pipes for indirect refrigeration systems with glycol water or brine.

Refrigerant rule

Refrigerant rule

Calculation rule for thermophysical properties of most usual refrigerants.

Psychrometry

Psychrometry

Calculation of psychrometric properties of moist air.