PDH Quiz – Industrial Heat Pumps for Steam and Fuel Savings

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.

COP_HP is defined as: COP_HP = Q_out / W_in .

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

Industrial Heat Pumps for Steam and Fuel Savings

Quiz Questions