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RISA Perspective on Methods for Analysis of Measured Energy Data from Commercial Buildings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper provides a historical perspective on the methods used to analyze measured energy use in commercial buildings. It summarizes the capabilities and uncertainties of the regression methods ...
A Noncalorimetric Method for Heat-Transfer Coefficient Measurement of Building Thermal Envelopes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A noncalorimetric method for measuring the heat-transfer coefficient (UA) of building thermal envelopes is proposed and applied in an indoor test cell. The UA value measured by this method ...
The Measured Energy Impact of Infiltration in an Outdoor Test Cell
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Air infiltration energy consumption was investigated in an outdoor test cell with different leakage configurations and air flow rates under both infiltration and exfiltration. Measurements showed ...
Use of Simplified System Models to Measure Retrofit Energy Savings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The retrofit of dual-duct constant volume systems (DDCV) with energy-efficient variable air volume systems (VAV) has become common in recent years. In general, the energy savings from such ...
The Energy Impact of Air Leakage Through Insulated Walls
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Infiltration is customarily assumed to increase the heating and cooling load of a building by an amount equal to the mass flow rate of the infiltration times the enthalpy difference between ...
Modeling Hourly Energy Use in Commercial Buildings With Fourier Series Functional Forms
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Hourly energy use in commercial buildings shows periodic variation in daily and annual cycles. Moreover, the pattern of variation is such that Fourier series functional forms provide one of the ...
A Change-Point Principal Component Analysis (CP/PCA) Method for Predicting Energy Usage in Commercial Buildings: The PCA Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new method for predicting daily whole-building electricity usage in a commercial building has been developed. This method utilizes a Principal Component Analysis (PCA) of intercorrelated influencing ...
Analytical Model to Predict Nonhomogeneous Soil Temperature Variation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an analytical model to predict the temperature variation within a multilayered soil. The soil surface temperature is assumed to have a sinusoidal time variation for both ...
Ambient-Temperature Regression Analysis for Estimating Retrofit Savings in Commercial Buildings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes a procedure for estimating weather-adjusted retrofit savings in commercial buildings using ambient-temperature regression models. The selection of ambient temperature as the ...
A Fourier Series Model to Predict Hourly Heating and Cooling Energy Use in Commercial Buildings With Outdoor Temperature as the Only Weather Variable
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accurate modeling of hourly heating and cooling energy use in commercial buildings can be achieved by a Generalized Fourier Series (GFS) approach involving weather variables such as dry-bulb ...