Papers and Presentations

Energy Performance Optimization Guide

The Energy Performance Optimization Guide is a resource describing how to develop, quantify, implement, and measure energy performance solutions in a commercial office space. The Natural Resources Defense Council’s (NRDC) Center for Market Innovation (CMI) developed, tested, and refined this process during the execution of live tenant projects included in its High Performance Tenant Demonstration Project. The goal was to find common solutions applicable across a broad spectrum of tenant conditions. The guide features three modules: Project Initiation, Value Analysis, and Implementation/Measurement and Verification. It is a framework that works together with a set of supporting tools to map out an energy performance analysis process that is integrated into each phase of the tenant’s process—site selection, design, construction, and occupancy.

Air-Cooled Unitary Single-Zone VAV: Performance Evaluation

Carrier Centurion PD Series Performance Evaluation

Unitary equipment represents a majority of the small commercial and school HVAC markets; the majority of current equipment consists of constant volume compressors and fans sized for peak conditions which leave room for significant savings by improving partial load operations through the use of variable capacity compressors and variable speed indoor fans.  This paper summarizes the findings of a combined performance monitoring and simulation analysis project designed to assess the potential benefit of new single-zone unitary rooftop VAV equipment.  The monitored equipment featured a five ton carrier single-zone unitary heat pump system equipped with a digital scroll compressor, variable speed drive controlling the indoor fan and demand controlled ventilation.  This work reports the results of the first in-field performance measurements and side-by-side comparison of this new system type with two other popular carrier package rooftop systems.

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Cost and Performance Analysis of a Solar Thermal Cooling Project

Proceedings of the ASME 2010 4th International Conference on Energy Sustainability

This paper presents the findings of a field study and performance analysis of a solar thermal cooling system located in Phoenix, Arizona.  This system is compared to conventional air conditioning equipment, as well as conventional air conditioning equipment powered by solar electric (photovoltaics).  The design of the solar cooling system, which incorporates solar-generated hot water and a single-stage absorption chiller, is discussed.  Capital and maintenance cost estimates, including auxiliary electric load and water, are also provided.  Operational problems are reviewed together with the design modifications that were required to resolve these issues.  Performance of the system and the individual components was determined based on field data collected.  Using this data the solar cooler energy savings over conventional air conditioning equipment was determined.

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Thermal Energy Storage: The Salt River Project Experience

Salt River Project Thermal Energy Storage (TES) Program
This paper presents the results of an in-depth impact evaluation of Salt River Project’s (SRP) Thermal Energy Storage (TES) Program. The evaluation consisted of on-site inspections of twenty-four TES facilities with short term monitoring of twelve sites during 1993 and 1994. Monitoring sites were chosen to provide a representative cross-section of both building sector (office, school, etc.) and TES system type (storage media) and size.

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