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Country	kind	publication No.	Filing Date	Type	Sub-Type
US	A1	US20110114284	Nov 16, 2010	Patent	Application
Type : Patent Sub-Type : Application
FIRST PUBLISHED PATENT APPLICATION		OPTIMIZING THE EFFICIENCY AND ENERGY USAGE OF A GEOTHERMAL MULTIPLE HEAT PUMP SYSTEM		May 19, 2011
US	B1	US9488388	Nov 22, 2013	Patent	Grant
Type : Patent Sub-Type : Grant
GRANTED PATENT AS FIRST PUBLICATION		Optimizing the efficiency and energy usage of a geothermal multiple heat pump system		Nov 08, 2016

• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
SIEGENTHALER JOHN	Not Provided

International Classification(s)

• F24J:PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED F....
• F25B:REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBIN....
• F28F:DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATU....

• 2013 Application Filing Year
• F24J Class
• 366 Applications Filed
• 309 Patents Issued To-Date
• 84.43 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Siegenthaler, John	Holland Patent, US	4	41
# of filed Patents : 4 Total Citations : 41

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Patent Citation Ranking

• 1 Citation Count
• F24J Class

• 13.04 % this patent is cited more than
• 10 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jun 1, 2027

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 9200819

Optimizing the efficiency and energy usage of a geothermal multiple heat pump system

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Abstract

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A system and a method for operating the system is provided to optimize heat exchange between a geothermal loop and a heat pump load loop for heating and cooling a structure. In the method, the flow rate through the earth loop is adjusted based on current thermal demand of a heat pump array, so as to reduce the electrical demand of the earth loop circulator when thermal demand from the heat pump loop is low. The method adjusts the speed of the earthloop circulator as required for the operating conditions of the heat pumps and earth loop, thereby permitting efficient laminar flow whenever possible, as long as thermal demand is met.

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Description

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Claims

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• PD2008

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Feb 15, 2013	F	Filing
Nov 01, 2008	PD	Priority Date