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Systems and methods for controlling a hybrid heating system

A heating system and controller technology, applied in heating methods, heating systems, household heating, etc., can solve the problem that the heat pump system is no longer effective

Active Publication Date: 2013-12-11
TRANE INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, for each heat pump system, there is an outdoor temperature threshold (here called the "thermal balance point") below which the heat pump system is no longer effective

Method used

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  • Systems and methods for controlling a hybrid heating system
  • Systems and methods for controlling a hybrid heating system
  • Systems and methods for controlling a hybrid heating system

Examples

Experimental program
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Embodiment Construction

[0011] figure 1 An HVAC system 100 with hybrid heating is shown in accordance with an embodiment of the invention. In HVAC system 100 , refrigerant is circulated through a heat pump including outdoor coil 102 , compressor 106 , indoor coil 122 , and expansion valve 112 . Arrows 104, 108, 110 and 114 show the direction of refrigerant flow in the heating cycle. For the cooling cycle, the direction of refrigerant flow in the HVAC system 100 is reversed.

[0012] During the heating cycle, the outdoor coil 102 evaporates the refrigerant. When the liquid refrigerant evaporates, it removes heat from the outside air. Gaseous refrigerant flows from outdoor coil 102 to (arrow 104 ) compressor 106 where it is compressed to produce high pressure superheated refrigerant vapor. The vapor exits compressor 106 and flows (arrow 108 ) to indoor coil 122 . At the indoor coil 122, air from a fan (blower) 124 removes heat from the steam (heating the room air), and when enough heat is removed,...

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PUM

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Abstract

In at least some embodiments, a hybrid heating system includes a heat pump and an auxiliary furnace. The system also includes a controller coupled to the heat pump and the auxiliary furnace. The controller, in response to receiving a heat request, selects either the heat pump or the auxiliary furnace based on an economic balance point algorithm.

Description

Background technique [0001] In heat pumps and refrigeration cycles, the refrigerant alternately absorbs and gives up heat energy and is compressed, condensed, expanded, and evaporated as it circulates through the system. Specifically, liquid refrigerant flows from the condenser through an expansion device (eg, an expansion valve) and into the evaporator. As the refrigerant flows through the expansion device and the evaporator, the pressure of the refrigerant decreases, the phase of the refrigerant changes to gas, and the refrigerant absorbs heat energy. Gaseous refrigerant travels from the evaporator to the compressor and then back to the condenser. As the refrigerant flows through the compressor and condenser, the pressure of the refrigerant increases, the refrigerant phase changes back to liquid, and the refrigerant gives off heat energy. This process is implemented to put thermal energy into or out of a space (eg heating a house) or to remove thermal energy from a space (...

Claims

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Application Information

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IPC IPC(8): F24D19/10G06Q50/06
CPCF24D12/02F24D15/04G06Q50/06F24D19/1087Y02B30/00
Inventor T·W·斯多姆G·L·加文J·D·道格拉斯J·R·埃登斯W·M·兰格
Owner TRANE INT INC