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Industrial Heat Pumps for Steam and Fuel Savings


Quiz Questions

1. Industrial heat pumps are a class of active heat-recovery equipment that allows the temperature of a waste-heat stream to be increased to a higher and a more useful temperature.
True
False
2. A heat pump is a device that can increase the temperature of a waste-heat source to a temperature where the waste heat becomes useful. This waste heat can replace purchased energy and reduce energy costs.
True
False
3. A heat pump requires an external_________________________________ source.
Mechanical energy
Electrical energy
4. Heat pumps operate on a thermodynamic principle known as the_________________________.
Carnot Cycle
Calvin Cycle
5.Mechanical heat pumps convert thermal energy into lower-grade thermal energy and create shaft work.
True
False
6. Comparison of steam-turbine and heat-pump operating principles is represented in ___________..
Figure 1.1
Figure 1.2
7. Heat pumps have the following functions: (1) Receipt of heat from the waste-heat source (2) Increase of the waste-heat temperature (3) Delivery of the useful heat at the elevated temperature.
True
False
8. Closed-Cycle Mechanical Heat Pumps use mechanical compression of a working fluid to achieve temperature lift. The working fluid is typically a common refrigerant.
True
False
9. Figure 1.4 illustrates ___________________ .
Simplified schematic of an absorption heat pump
Comparison of cost of heat delivered
10.The most common large-heat-load application is vapor compression evaporation.
True
False
11. ______________________ shows how a closed-cycle mechanical heat pump is used for lumber drying.
Figure 2.1a
Figure 2.1b
12. Table 3.2 illustrates features favorable for heat-pump installations.
True
False
13.COPHP is defined as: COPHP = Qout / Win .
True
False
14. Figure 3.1 illustrates the mechanical heat-pump operating parameters.
True
False
15. Open-cycle thermo compression heat pumps use energy in high-pressure motive steam to increase the pressure of waste vapor using a jet-ejector device
True
False