Method of monitoring condenser performance and system therefor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4390058
SERIAL NO

06213095

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method of monitoring the performance of a condenser and a system for carrying such method into practice, wherein a cooling water temperature, a cooling water flow rate, a condenser temperature and/or a heat flux through walls of cooling water tubes of the condenser are sensed by sensors to obtain values representing the operating conditions of the condenser, and an overall heat transmission coefficient or a heat transfer rate of the cooling water tubes is calculated at an arithmetic unit from the values representing the operating conditions. The cleanness of the cooling water tubes is calculated by an arithmetic unit from the value of the overall heat transmission coefficient or the heat transfer rate, and the performance of the condenser is judged by a performance judging unit based on the cleanness of the cooling water tubes.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
HITACHI, LTD.TOKYO13740

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyai, Masahiko Mito, JP 7 127
Mukai, Yasuteru Hitachi, JP 7 141
Okouchi, Isao Hitachi, JP 12 216
Otake, Katsumoto Hitachi, JP 9 137

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DORYOKURO KAKUNENRYO KAIHATSU JIGYODAN (1)
* 4293853 Method and apparatus for detecting flow instability in steam generator 4 1980
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Westinghouse Electric Corp. (1)
* 5005351 Power plant condenser control system 9 1990
 
Other [Check patent profile for assignment information] (5)
* 4611470 Method primarily for performance control at heat pumps or refrigerating installations and arrangement for carrying out the method 100 1984
* 5607008 Method of monitoring the condition of soiling and /or calcification of heat exchangers in heating and cooling installations 2 1994
* 6128901 Pressure control system to improve power plant efficiency 3 1999
* 2008/0051,945 METHOD AND APPARATUS FOR LOAD REDUCTION IN AN ELECTRIC POWER SYSTEM 26 2007
7802430 Condensers efficiency through novel PCS technology 0 2009
 
GENERAL ELECTRIC COMPANY (1)
6931352 System and method for monitoring the condition of a heat exchange unit 9 2002
 
Helio-Compatic Corporation (1)
* 5615733 On-line monitoring system of a simulated heat-exchanger 13 1996
 
INVODANE ENGINEERING LTD (2)
8863820 Measurement device for heat exchanger and process for measuring performance of a heat exchanger 0 2010
* 2011/0282,619 MEASUREMENT DEVICE FOR HEAT EXCHANGER AND PROCESS FOR MEASURING PERFORMANCE OF A HEAT EXCHANGER 1 2010
 
SIEMENS AKTIENGESELLSCHAFT (1)
* 5385202 Method and apparatus for operational monitoring of a condenser with tubes, by measurements at selected tubes 18 1993
 
UNIVERSITY OF WATERLOO (3)
* 4556019 Convection section ash monitoring 3 1984
* 4603660 Convection section ash monitoring 6 1985
* 4552098 Convection section ash monitoring 11 1985
 
EMERSON ELECTRIC CO. (4)
9285802 Residential solutions HVAC monitoring and diagnosis 0 2012
9551504 HVAC system remote monitoring and diagnosis 0 2014
9638436 HVAC system remote monitoring and diagnosis 0 2014
9703287 Remote HVAC monitoring and diagnosis 0 2014
 
EBARA CORPORATION (2)
* 4693305 System for controlling fluid flow in a tube of a heat exchanger 5 1985
* 4846259 Method for controlling fluid flow in a tube of a heat exchanger 4 1987
 
ONICON INCORPORATED (1)
* 7775706 Compensated heat energy meter 4 2009
 
E. Beaudrey et Cie (1)
* 6530427 Control installation for solid cleaning members circulating in a heat exchanger 3 2000
 
Electric Power Research Institute, Inc. (2)
* 5429178 Dual tube fouling monitor and method 10 1993
* 5590706 On-line fouling monitor for service water system heat exchangers 10 1995
 
CROWN IRON WORKS COMPANY (2)
7124580 Sub-zero condensation vacuum system 1 2004
* 2005/0279,089 Sub-zero condensation vacuum system 0 2004
 
Stork Amsterdam B.V. (1)
* 4738302 Method of operating and cleaning an apparatus for heat treating a liquid product 9 1985
 
Emerson Climate Technologies, Inc. (33)
7424343 Method and apparatus for load reduction in an electric power system 34 2004
7275377 Method and apparatus for monitoring refrigerant-cycle systems 33 2004
7331187 Intelligent thermostat system for monitoring a refrigerant-cycle apparatus 46 2005
7244294 Air filter monitoring system 106 2005
7201006 Method and apparatus for monitoring air-exchange evaporation in a refrigerant-cycle system 35 2005
* 7114343 Method and apparatus for monitoring a condenser unit in a refrigerant-cycle system 50 2005
* 2006/0032,246 Intelligent thermostat system for monitoring a refrigerant-cycle apparatus 21 2005
* 2006/0032,247 Method and apparatus for monitoring a condenser unit in a refrigerant-cycle system 21 2005
* 2006/0032,248 Method and apparatus for monitoring air-exchange evaporation in a refrigerant-cycle system 22 2005
* 2006/0032,379 Air filter monitoring system 50 2005
7469546 Method and apparatus for monitoring a calibrated condenser unit in a refrigerant-cycle system 35 2006
7343751 Intelligent thermostat system for load monitoring a refrigerant-cycle apparatus 28 2006
* 2006/0201,168 Method and apparatus for monitoring a calibrated condenser unit in a refrigerant-cycle system 24 2006
* 2006/0196,197 Intelligent thermostat system for load monitoring a refrigerant-cycle apparatus 22 2006
8034170 Air filter monitoring system 30 2007
* 2008/0015,797 AIR FILTER MONITORING SYSTEM 24 2007
9140728 Compressor sensor module 0 2008
9304521 Air filter monitoring system 0 2011
9310094 Portable method and apparatus for monitoring refrigerant-cycle systems 0 2012
8964338 System and method for compressor motor protection 0 2013
9046900 Method and apparatus for monitoring refrigeration-cycle systems 0 2013
9194894 Compressor sensor module 0 2013
9086704 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
9081394 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
9023136 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
9021819 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
9017461 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
8974573 Method and apparatus for monitoring a refrigeration-cycle system 1 2013
9121407 Compressor diagnostic and protection system and method 0 2013
9310439 Compressor having a control and diagnostic module 5 2013
9590413 System and method for compressor motor protection 0 2015
9690307 Method and apparatus for monitoring refrigeration-cycle systems 0 2015
9669498 Compressor diagnostic and protection system and method 0 2015
 
MITSUBISHI ELECTRIC CORPORATION (3)
* 8087258 Air conditioner, refrigerant filling method of air conditioner, method for judging refrigerant filling state of air conditioner as well as refrigerant filling and pipe cleaning method of air conditioner 1 2006
* 9657955 Air-conditioning apparatus 0 2008
9103574 Air conditioner, refrigerant filling method of air conditioner, method for judging refrigerant filling state of air conditioner as well as refrigerant filling and pipe cleaning method of air conditioner 0 2010
 
ELSAG INTERNATIONAL B.V., A CORP. OF THE NETHERLANDS (2)
* 4507930 Cooling tower monitor 11 1984
* 4766553 Heat exchanger performance monitor 28 1987
 
DANFOSS A/S (8)
7685830 Method for detecting changes in a first media flow of a heat or cooling medium in a refrigeration system 30 2003
7650758 Method for evaluating a non-measured operating variable in a refrigeration plant 0 2003
7681407 Method and a device for detecting flash gas 1 2003
* 2006/0032,606 Method and a device for detecting an abnormality of a heat exchanger and the use of such a device 8 2003
* 2005/0166,609 Method and a device for detecting flash gas 6 2005
* 2005/0166,608 Method for evaluating a non-measured operating variable in a refrigeration plant 5 2005
* 2005/0172,647 Method for detecting changes in a first flux of a heat or cold transport medium in a refrigeration system 32 2005
8100167 Method and a device for detecting an abnormality of a heat exchanger, and the use of such a device 0 2009
 
KNOBBE MARTENS OLSON & BEAR LLP (5)
* 2006/0196,196 Method and apparatus for airflow monitoring refrigerant-cycle systems 29 2006
* 2008/0016,888 METHOD AND APPARATUS FOR MONITORING REFRIGERANT-CYCLE SYSTEMS 27 2007
* 2008/0223,051 INTELLIGENT THERMOSTAT SYSTEM FOR MONITORING A REFRIGERANT-CYCLE APPARATUS 29 2008
* 2008/0216,495 INTELLIGENT THERMOSTAT SYSTEM FOR LOAD MONITORING A REFRIGERANT-CYCLE APPARATUS 26 2008
* 2009/0187,281 METHOD AND APPARATUS FOR MONITORING A CALIBRATED CONDENSER UNIT IN A REFRIGERANT-CYCLE SYSTEM 24 2008
 
SUMITOMO LIGHT METAL INDUSTRIES, LTD. (2)
* 4776384 Method for monitoring copper-alloy tubes for maintaining corrosion resistance and cleanliness factor of their inner surfaces 3 1986
* 4762168 Condenser having apparatus for monitoring conditions of inner surface of condenser tubes 12 1986
 
SIVACOE, ORLANDE (3)
6170493 Method of cleaning a heater 18 1997
6569255 Pig and method for cleaning tubes 12 1998
6391121 Method of cleaning a heater 8 2000
* Cited By Examiner