US7848900B2
Active / In Force
US
⏱️ 1.9 years remaining
System and method for calculating the thermal mass of a building
Assignee: Ecofactor Inc
•
Filing: 2008-09-16
•
Granted: 2010-12-07
•
Expires: 2028-09-16
Abstract
Abstract The invention comprises a system for calculating a value for the effective thermal mass of a building. The climate control system obtains temperature measurements from at least a first location conditioned by the climate system. One or more processors receive measurements of outside temperatures from at least one source other than the control system and compare the temperature measurements from the first location with expected temperature measurements. The expected temperature measurements are based at least in part upon past temperature measurements obtained by said HVAC control system and said outside temperature measurements. The processors then calculate one or more rates of change in temperature at said first location.
Inventors
- 👤 John Douglas Steinberg
- 👤 Scott Douglas Hublou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:26
CPC Classifications
G; G01; G01K; G01K13/00; F; F24; F24F; F24F11/00; F24F11/30; F24F11/46; F24F11/47; F24F11/50; F24F11/56; F24F11/58; F24F11/62; F24F11/63; F24F11/64; G01K1/00; G01K1/20; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/048; G05D; G05D23/00; G05D23/19; G05D23/1917; G06; G06F; G06F15/00; F24F11/32; F24F11/65; F24F2110/00; F24F2110/10; F24F2110/12; F24F2110/30; F24F2110/32; F24F2120/00; F24F2120/10; F24F2130/00; F24F2130/10; F24F2130/20; F24F2140/00; F24F2140/50; F24F2140/60; G05B2219/00; G05B2219/20; G05B2219/26; G05B2219/2614
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
208 words
A system for calculating a value for an operational efficiency of an heating, ventilation, and air conditioning (HVAC) system comprising: at least one HVAC control system that receives temperature measurements from at least a first location conditioned by at least one HVAC system, and receives status of said HVAC system; one or more databases that store at least said temperatures measured at said first location over time; and one or more processors that receive outside temperature measurements from at least one source other than said HVAC system and compare said temperature measurements from said first location with expected temperature measurements wherein the expected temperature measurements are based at least in part upon past temperature measurements and said outside temperature measurements, wherein said one or more processors are configured to calculate one or more first rates of change in temperature at said first location for periods during which the status of the HVAC system is “on” and wherein said one or more processors are further configured to calculate one or more second rates of change in temperature at said first location for periods during which the status of the HVAC system is “off”, and to relate said first and second calculated rates of change to said outside temperature measurements.
Claim 2
Independent Claim
208 words
A system for calculating a value for an operational efficiency of an heating, ventilation, and air conditioning (HVAC) system comprising: at least one HVAC control system that receives temperature measurements from at least a first location conditioned by at least one HVAC system, and receives status of said HVAC system; one or more databases that store at least said temperatures measured at said first location over time; and one or more processors that receive outside temperature measurements from at least one source other than said HVAC system and compare said temperature measurements from said first location with expected temperature measurements wherein the expected temperature measurements are based at least in part upon past temperature measurements and said outside temperature measurements, wherein said one or more processors are configured to calculate one or more first rates of change in temperature at said first location for periods during which the status of the HVAC system is “on” and wherein said one or more processors are further configured to calculate one or more second rates of change in temperature at said first location for periods during which the status of the HVAC system is “off”, and to relate said first and second calculated rates of change to said outside temperature measurements.
Claim 3
Dependent Claim
28 words
A system as in claim 1 in which said processors receive temperature of outside temperatures for geographic regions comprising ZIP codes from sources other than said HVAC system.
Claim 4
Dependent Claim
21 words
A system as in claim 1 further comprising a programmable thermostat that communicates with said HVAC control system using the Internet.
Claim 5
Dependent Claim
23 words
A system as in claim 1 in which said processors communicate with said HVAC system using a network that includes an electricity meter.
Claim 6
Dependent Claim
32 words
A system as in claim 1 further comprising a programmable thermostat and said programmable thermostat is the sole source for current data regarding temperature inside said location conditioned by said HVAC system.
Claim 7
Dependent Claim
21 words
A system as in claim 1 in which said temperature measurements inside said first location occur at only one physical location.
Claim 8
Dependent Claim
22 words
A system as in claim 1 in which the status of said HVAC system includes whether said system is “on” or “off”.
References Cited (Backward Citations)
US4403644A
Cited
US4674027A
Cited
US6542076B1
Cited
US6549130B1
Cited
US5572438A
Cited
US5818347A
Cited
US5717609A
Cited
US6772052B1
Cited
US6437692B1
Cited
US6891838B1
Cited
US6178362B1
Cited
US6594825B1
Cited
US6145751A
Cited
US6882712B1
Cited
US6483906B1
Cited
US7215746B2
Cited
US6351693B1
Cited
US6400996B1
Cited
US6598056B1
Cited
US6536675B1
Cited
US6734806B1
Cited
US6785592B1
Cited
US6580950B1
Cited
US6622115B1
Cited
US7187986B2
Cited
US6628997B1
Cited
US6853959B2
Cited
US6633823B2
Cited
US7130832B2
Cited
US6868293B1
Cited
US6595430B1
Cited
US6731992B1
Cited
US6480803B1
Cited
US6478233B1
Cited
US6868319B2
Cited
US6574537B2
Cited
US6695218B2
Cited
US7009493B2
Cited
US7039532B2
Cited
US6622097B2
Cited
US6671586B2
Cited
US7216015B2
Cited
US20030040934A1
Cited
US6622925B2
Cited
US6643567B2
Cited
US6785630B2
Cited
US6619555B2
Cited
US6789739B2
Cited
US6726113B2
Cited
US7130719B2
Cited
US20070043477A1
Cited
US6622926B1
Cited
US7231424B2
Cited
US7089088B2
Cited
US7232075B1
Cited
US6991029B2
Cited
US6889908B2
Cited
US7167079B2
Cited
US20050222889A1
Cited
US7031880B1
Cited
US20050288822A1
Cited
US7205892B2
Cited
US20080083234A1
Cited
US20090099699A1
Cited
US20090125151A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2013-12-06 | 2014-06-07 | 2014-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2017-12-06 | 2018-06-07 | 2018-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2021-12-06 | 2022-06-07 | 2022-12-07 | $7700.00 | Window Closed / Lapsed |