Air conditioning system with heat pump section and separate heat source section
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United States of America Patent
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Jan 31, 2017
Grant Date -
Nov 17, 2016
app pub date -
Jan 27, 2015
filing date -
Feb 3, 2014
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Abstract
An air conditioning system includes a heat pump section performing indoor air-warming by using a vapor-compression refrigeration cycle, a separate heat source section performing indoor air-warming by using a heat source separate from the heat pump section, and a control unit configured to control actions of the heat pump section and the separate heat source section. When an operation is switched from a separate heat source air-warming operation to a heat pump air-warming operation, the control unit starts the heat pump air-warming operation while the separate heat source air-warming operation is continued, and after an overlapping air-warming ending condition is met, the control unit ends the separate heat source air-warming operation. The overlapping air-warming ending condition is that a temperature difference resulting from subtracting a target indoor temperature from an indoor temperature is equal to or greater than an overlapping air-warming ending air temperature difference.
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