Controls on Energy Use of Ground Source System at Black Rock Forest


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Table of contents

Controls on Energy Use of Ground Source System at Black Rock Forest

Equilibrium of Heat Loss

Methods of Heat Transfer

Conduction of Heat

Changes in Insulation Requirements

Differences in R value of Common Materials

Table of R Values

Composite R Values

Preventing Heat Loss by Convection

Infiltration of Air: Also Convection

Weather Stripping: Slows Infiltration

Characterizing Insulation Needs

Heating and Cooling Degree Days

Heating and Cooling DD in the United States R-Values

Transmittance/Reflectance of Glass

Table of Optical Properties

Convection in Windows

Optimum Air Space Thickness

Energy Savings from Conservation

Payback Time

Savings and Payback Times

Radiant Slab Heat

Reducing Cooling Needs

Radiant Barriers

Slide 25

Savings from Energy Efficient Landscaping

Effects of Windbreaks

More on Windbreak Design

Summer Shading

Winter: Let the Sun Shine In!

Solar Radiation vs Infrared Radiation

Seasonal and Latitudinal Insolation Variations

Angle of Incidence of Solar Insolation

Seasonal Sunrise and Sun Angle at 40¡N

Insolation on a Solar Collector: 40¡N

Three Types of Solar Insolation

US Mean Annual Solar Insolation

General Features of Solar Heating

Direct Gain Space Heating

Performance of a Passive Solar Building

Trombe Wall

Solar Greenhouse (Indirect Gain)

Thermal Energy Storage

Heat Capacity

Components of Solar Heating Systems

Ground Source Geothermal System

Heat Pumps-How They Cool

Summer: Ground is cooler than Air

Heat Pump in Winter

Ground is much warmer than air in the winter.

Author: William Menke

E-mail: menke@ldeo.columbia.edu

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