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Products | Thermodynamics, Heating and Sanitary Systems | Refrigeration and Air Conditioning | ET 104

ET 104

Heat Pump with Dual Mode Evaporator

Technical Description

This compact benchtop unit comprises components that are commonly used in industrial systems. A special feature of this system is that the evaporator can be operated with either water or air. A hermetic compressor with integrated oil cooler creates the refrigerant flow in the system. The relevant process parameters can be measured and adjusted on the front panel of the unit. An environmentally friendly refrigerant is used.
A supply of water is required.

Learning Objectives / Experiments

- Energy balance for water and air operation
- Cyclic process on the p-h state diagram
- Effect of cooling water inlet temperatures and oil
cooler

Features

* Compact system with components from refrigeration
engineering
* Water or air operated evaporator
* All measured values are displayed on the front panel

Alternative products

ET 103 -- Heat Pump with Pumpdown Control
ET 405 -- Reverse Cycle Refrigeration Training System

Specification

[1] Air-to water heat pump as benchtop unit
[2] Evaporator can be operated with either water or air (plate heat exchanger, finned tube evaporator)
[3] hermetic piston compressor with integrated oil cooler
[4] Coaxial condenser
[5] High/low pressure shut down (pressostats)
[6] Temperature sensors with display and selector switch
[7] CFC-free refrigerant R 134a
[8] l x w x h: 1030x675x702mm, 40kg
[9] 230V, 50/60Hz, 1 phase

Technical Data

Hermetic compressor: power consumption: 420W at -10/32°C, refrigerating capacity: 1140W at -5/32°C
Water-cooled evaporator: 1kW, plate type heat exchanger, max. flow rate: 4mł/h
Air-cooled evaporator: 1kW, finned tube type, max. airflow rate: 290mł/h
Coaxial condenser: 2kW
Measuring ranges:
Pressure: -1...9bar / -1...24bar, power: 0...600W, temperature: -20...200°C, flow rate (water): 4...51g/s, flow rate (R134a): 1.2...20g/s

Dimensions and Weight

l x w x h : 1030 x 675 x 702 mm
Weight : approx. 40 kg

Connections

230V, 50/60Hz, 1 phase
Water supply

Scope of Delivery

1 complete unit
1 instruction manual

Order Details

061.10400 ET 104 Heat Pump with Dual Mode
Evaporator