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Monitoring the performance of solar heated and cooled buildings. Volume 2. Measuring instruments - selection, calibration and installation. Final report

Technical Report ·
OSTI ID:5491389
Measurements needed to assess the thermal performance of solar heated or cooled buildings are discussed. A handbook of measuring functions and principles is presented. Transducers most appropriate for SHACOB monitoring are discussed in detail. These include, for temperature: semiconductor sensors, thermistors and thermopiles (a new thermopile sensitivity function is presented); for flow: positive displacement and propeller meters with pulse train outputs and heated sensor probes; and for insolation: thermopile and photovoltaic pyranometers. The measurements of concern in passive buildings: heat flux, temperature-time trajectories and mean radiant temperature; and the measurements generally needed to compute thermal capacitance rates in air systems: pressure and humidity; are also discussed. Calibration, installation and signal interfacing considerations are reviewed. Special techniques for measuring fluid flows and enthalpy rates associated with fluid flows (using Btu meters) are described and some new designs proposed. Also presented are a transducer selection procedure, an analysis of sampling error and error propagation, and a review of grounding and shielding practice.
Research Organization:
Altas Corp., Santa Cruz, CA (USA)
OSTI ID:
5491389
Report Number(s):
EPRI-ER-1239(Vol.4)
Country of Publication:
United States
Language:
English