Method for determining mechanical heat-up lag (MHL) of a building from the building's natural thermal lag (NTL)

• US 20150142368A1
• Filed: 01/27/2015
• Published: 05/21/2015
• Est. Priority Date: 05/31/2013
• Status: Abandoned Application

• Current Assignee: Patrick Andrew Shiel
• Original Assignee: Patrick Andrew Shiel
• Inventors: SHIEL, Patrick Andrew
• Application Number:
  US14/607,003
• Publication Number:
  US 20150142368A1
• Time in Patent Office: Days
• US Class Current: 702/136
• CPC Class Codes: F24D 19/1081 counting of energy consumption
• CPC Class Codes: F24F 11/46 Improving electric energy efficiency or saving
• CPC Class Codes: F24F 2130/00 Control inputs relating to environmental factors not covered by group F24F2110/00
• CPC Class Codes: F24F 2130/10 Weather information or forecasts
• CPC Class Codes: F24F 2140/60 Energy consumption
• CPC Class Codes: G06F 30/13 Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30
• CPC Class Codes: G06Q 10/04 Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" market predictions or forecasting for commercial activities G06Q30/0202
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: G06Q 50/16 Real estate

Abstract

The invention provides an improved method for determining the mechanical heat-up lag of a building. The time lag for the heating system to reach its set point, which is referred to as the Mechanical Heat-up Lag (MHL) is dependent on the natural thermal lag (NTL) of a building. The invention provides a determination of the MHL as it relates to the NTL. The invention is very useful in reducing energy usage in commercial buildings when used in combination with a short term weather forecast.

Claims

1. An improved method of determining the mechanical heat-up lag of a building, wherein the improvement comprises the step of predicting the mechanical heat-up lag of a building based on the natural thermal lag of said building, according to the equation

MHL_i=β

₀−

β

₁NTL_i+ε

_i 

 

Eqn 1

where β

₀ represents the intercept of the linear relationship on the y-axis, β

₁ represents the slope of the relationship between MHL and NTL, and ε

represents the error inherent in the linear model.

2. An improved method of determining mechanical cool-down lag of a building, wherein the improvement comprises the step of predicting the mechanical cool-down lag of a building base on the natural themal lag of said building according to the equation

MCL_i=β

₀−

β

₁NTL_i+ε

_i 

 

Eqn 2

where β

₀ represents the intercept of the linear relationship on the y-axis, β

₁ represents the slope of the relationship between MCL and NTL, and ε

represents the error inherent in the linear model.