ACROSS 4 energy the cooled space in Btu\'s for 1 Wh (watt-hour) of electricity c

Question

ACROSS 4 energy the cooled space in Btu's for 1 Wh (watt-hour) of electricity consumed. rating is the performance of refrigerators and air conditioners, and is the amount of heat removed from fluid is the fluid to and from which heat and work is transferred while undergoing a cycle in heat engines and other cyclic devices. tis a heat reservoir that absorbs energy in the form of heat. processes, once having taken place in a system, cannot spontaneously reverse themselves and restore the system to its initial state 13 heat characterized by the following: 1. They receive heat from a high-temperature source (solar energy, oil furnace, nuclear reactor, etc.). 2. They convert part of this heat to work (usually in the form of a rotating shaft). 3. They reject the remaining waste heat to a low-temperature sink (the atmosphere, rivers, etc.).4. They operate on a cycle 15 heat maintain the heated space at a high temperature are devices that convert heat to work. They differ considerably from one another, but all can be are cyclic devices which operate on the refrigeration cycle and discharge energy to a heated space to scale is the thermodynamic temperature scale in the SI. The temperature unit on this scale is the kelvin, which is designated by K. 18 is a heat exchanger in which the working fluid evaporates as it receives heat from the surroundings. 20 heat surroundings) by virtue of a temperature difference. is defined as the form of energy that is transferred between two systems (or a system and its temperatures measured on the Kelvin scale or Rankine scale, and these temperatures vary between zero and infinity DOWN 1 is a familiar form of irreversibility associated with bodies in motion which results from the force that opposes the motion developed at the interface of the two bodies in contact when the two bodies are forced to move relative to each other cycle is composed of four reversible processes-two isothermal and two adiabatic, and can be executed either in a closed or a steady-flow system process is defined as a process that can be reversed without leaving any trace on the surroundings. These are idealized processes, and they can be approached but never reached in reality 4 is one of the most frequently used terms in thermodynamics, and it indicates how well an energy conversion or transfer process is accomplished 5 is a heat exchanger in which the working fluid condenses as it rejects heat to the surroundings of performance is the measure of performance of refrigerators and heat pumps. It is expressed in terms of the desired result for each device (heat absorbed from the refrigerated space for the refrigerator or heat added to the hot space by the heat pump) divided by the input, the energy expended to accomplish the energy transfer (usually work input) 9 is the working fluid used in the refrigeration cycle Carnot cycle is the result of reversing all the process that comprise the reversible Carnot heat-engine cycle, in which case it becomes the Carnot refrigeration cycle 12 14 heat 7 heat 19 is defined as an amount of energy produced by the combustion of natural gas and is equal to 29.3 kWh -motion machine is any device that violates either the first or second law of thermodynamics. is a thermal energy reservoir since it can supply or absorb energy in the form of heat. is a heat reservoir that supplies energy in the form of heat.

Explanation / Answer

Across

4. Efficiency

7. Working

8. Sink

10. Irreversible

13. Engine

15. Pump

16. Kelvin

18. Evaporator

20. Energy

21. Absolute

Down

1. Friction

2. Carnot

3. Reversible

4. Efficiency

5. condenser

6. Coefficient

9. refrigerant

11.Reverse

12.Perpetual

14. Resevoir

17. Source

19. heating value

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