THIBAR22B Rerversível Bomba de Calor + Ar Condicionado + Refrigeração com 2 Condensadores e 2 Evaporadores (Água/Ar)

9.4.- REFRIGERAÇÃO
RERVERSIBLE HEAT PUMP + AIR CONDITIONING + REFRIGERATION WITH 2 CONDENSERS AND 2 EVAPORATORS (WATER/AIR) - THIBAR22B

SISTEMAS INOVADORES

The unit "THIBAR22B" has as aim introduce the student to the study of the heat pumps, air conditioning and refrigeration, as well as the analysis and determination of the operation typical parameters of the unit depending on the two types of fluids used in the processes of evaporation and condensation (air and water).

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Descrição Geral

The unit "THIBAR22B" has as aim introduce the student to the study of the heat pumps, air conditioning and refrigeration, as well as the analysis and determination of the operation typical parameters of the unit depending on the two types of fluids used in the processes of evaporation and condensation (air and water).

This unit can have different applications, depending on the type of cold focus or hot focus used in the processes of evaporation and condensation. This unit consists of the following stages:

  • Compression:

This stage begins when the coolant enters to the compressor. This coolant iscompressed, increasing its pressure and temperature. Tomeasure these variables theunit includes a manometer and a temperature sensor.

  • Condensation:

The coolant has two possibilities: divert the coolant through the air condenser, or through the water condenser. The coolanttransfers its heat to the water (or to the air) that flows for the condenser. At the end of this stage, the pressure and the temperatureof the coolant are measured by means of a manometer and a temperature sensor.

  • Expansion:

The coolant circulates through an accumulator and a filter, to retain particles of condensate, and a flow meter. Next it circulatesthrough the valve of expansion, which causes a fall of pressure and temperature of the coolant. At the end of this stage, the pressureand the temperature of the coolant are measured by means of a manometer and temperature sensor.

  • Evaporation:

The coolant has two possibilities: divert the coolant through the air evaporator, or through the water evaporator. The coolant absorbs the heat of the water (or the air) that flows for the evaporator. At the end of this stage, the pressure and the temperatureof the coolant are measured by means of manometer and a temperature sensor. Finally, the coolant circulates through a liquid separator to retain liquid particles before going on to the compressor.

The condensers and evaporators have different meters for the measure of the most important parameters (temperatures and flows). In addition, the unit includes a high pressure control to avoid an excess of pressure in the unit.

EXERCÍCIOS E PRÁTICAS GUIADAS

EXERCÍCIOS PRÁTICOS GUIADOS INCLUÍDOS NO MANUAL

  1. Determination of COP (coefficient of performance) of a heat pump. Water as heat source. (Water-water heat pump).
  2. Determination of COP (coefficient of performance) of a heat pump. Air as heat source. (Water-air heat pump).
  3. Determination of COP (coefficient of performance) of a heat pump. Air as heat source. (Air-air heat pump).
  4. Determination of COP (coefficient of performance) of a heat pump. Water as heat source. (Air-water heat pump).
  5. Representation of performance curves of the heat pump with different inlet and outlet temperatures. Water as heat source.(Water-water heat pump).
  6. Representation of performance curves of the heat pump with different inlet and outlet temperatures. Air as heat source.(Water-air heat pump).
  7. Representation of performance curves of the heat pump with different inlet and outlet temperatures. Water as heat source.(Air-water heat pump).
  8. Representation of performance curves of the heat pump with different inlet and outlet temperatures. Air as heat source.(Air-air heat pump).
  9. Lay out of the refrigeration compression cycle in a diagram PH and comparison with the ideal cycle. Water as heat source.(Water-water heat pump).
  10. Lay out of the refrigeration compression cycle in a diagram PH and comparison with the ideal cycle. Air as heat source.(Water-air heat pump).
  11. Lay out of the refrigeration compression cycle in a diagram PH and comparison with the ideal cycle. Water as heat source.(Air-water heat pump).
  12. Lay out of the refrigeration compression cycle in a diagram PH and comparison with the ideal cycle. Air as heat source. (Airair heat pump).
  13. Representation of the performance curves of the heat pump based on the properties of the refrigerant and at different condensation and evaporation temperatures. Water as heat source. (Water-water heat pump).
  14. Representation of the performance curves of the heat pump based on the properties of the refrigerant and at different condensation and evaporation temperatures. Air as heat source. (Water-air heat pump).
  15. Representation of the performance curves of the heat pump based on the properties of the refrigerant and at different condensation and evaporation temperatures. Water as heat source. (Air-water heat pump).
  16. Representation of the performance curves of the heat pump based on the properties of the refrigerant and at different condensation and evaporation temperatures. Air as heat source. (Air-air heat pump).
  17. Practices with cycle inversion.

EXERCÍCIOS MAIS PRÁTICOS A SEREM FEITOS COM A UNIDADE

  1. Properties of the refrigerant R-513a.
  2. Enthalpy-Pressure diagram for the refrigerant R-513a.

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