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in subjects: "Solar Heating Systems 140901* -- Solar Thermal Utilization-- Space Heating & Cooling"

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Solar/performance goals for solar and ground-coupled heat pump systems

Cost goals for combined solar/heat pump systems are developed. Three methods of analysis are used: simple payback, positive cash flow, and life cycle costing. The goals are parameterized on system energy efficiency, with the air-to-air heat pump as the conventional system which is used as a basis for comparison. Cost goals for nine systems are determined in three generic climates.

Date: September 1, 1980

Creator: Andrews, J. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Continuing development of the DEROB system. Quarterly report, July 1, 1980-September 30, 1980

The last module of the DEROB System has been reprogrammed and recoded in an effort to reduce the computational time and cost associated with using DEROB. Some preliminary tests have been carried out on the new program, and the tentative results show that the time of execution can be reduced anywhere from 7% to 40% of the time required by the previous version of DEROB. The variability in the improvement arises from the options specified by the user. Additional tests are being carried out to debu… more

Date: October 1, 1980

Creator: Arumi-Noe, F

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Conservation and solar guidelines

Guidelines are given for selecting R-values and infiltration levels, and determining the size of the solar collection area for passive solar buildings. The guidelines are based on balancing the incremental cost/benefit of conservation and passive solar strategies. Tables are given for 90 cities in the US and the results are also displayed on maps. An example is included.

Date: January 1, 1983

Creator: Balcomb, J. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Correlation methods

Correlation methods have been developed to provide a quick and relatively simple technique for estimating the performance of passive solar systems. The correlations are done with respect to data generated from simulation models. The techniques and accuracies are described. Both the Solar Load Ratio and Un-Utilizability methods are described. The advantages and limitations of correlation methods as design tools are discussed.

Date: January 1, 1981

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Development of simplified design aids based on the results of simulation analysis

The Solar Load Ratio method for estimating the performance of passive solar heating systems is described. It is a simplified technique which is based on correlating the monthly solar savings fraction in terms of the ratio of monthly solar radiation absorbed by the building to total monthly building thermal load. The effect of differences between actual design parameters and those used to develop the correlations is estimated afterwards using sensitivity curves. The technique is fast and simple … more

Date: January 1, 1980

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Energy savings obtainable through passive solar techniques

A passive solar energy system is one in which the thermal energy flow is by natural means, that is by radiation, conduction, or natural convection. The purpose of the paper is to provide a survey of passive solar heating experience, especially in the US. Design approaches are reviewed and examples shown. Misconceptions are discussed. Advantages are listed. The Los Alamos program of performance simulation and evaluation is described and a simplified method of performance estimation is outlined.

Date: January 1, 1980

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Guidelines for conservation levels and for sizing passive-solar collection area

Guidelines are given for selecting R-values and infiltration levels, and determining the size of the solar collection area for passive solar building. The guidelines are based on balancing the incremental cost/benefit of conservation and solar strategies. Tables are given for 209 cities in the US and the results are also displayed on maps. The procedures are developed in an appendix, which gives the cost assumptions used and explains how to develop different guidelines for different costs.

Date: January 1, 1983

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Heat distribution by natural convection

Natural convection can provide adequate heat distribution in many situations that arise in buildings. This is appropriate, for example, in passive solar buildings where some rooms tend to be more strongly solar heated than others. Natural convection can also be used to reduce the number of auxiliary heating units required in a building. Natural airflow and heat transport through doorways and other internal building apertures are predictable and can be accounted for in the design. The nature of … more

Date: January 1, 1985

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Mapping the energy saving potential of passive heating combined with conservation

A procedure is presented for estimating the energy savings potential of combining conservation and passive solar strategies to reduce building heating. General scaling laws are used for costs and the resulting continuous equations are evaluated to find the least life-cycle cost strategy. Results are mapped for the US.

Date: January 1, 1985

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Passive solar applications

Passive solar applications in buildings are described. The major emphasis of the research has been on devising mathematical models to characterize heat flow within buildings, on the validation of these models by comparison with test results, and on the subsequent use of the models to investigate the influence of both various design parameters and the weather on system performance. Results from both test modules and monitored buildings are discussed. Simulation analysis, the development of simpl… more

Date: January 1, 1985

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Passive-Solar-Heating Analysis: a new ASHRAE manual

The forthcoming ASHRAE book, Passive Solar Heating Analysis, is described. ASHRAE approval procedures are discussed. An overview of the contents is given. The development of the solar load ratio correlations is described, and the applicability of the analysis method is discussed.

Date: January 1, 1983

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Passive solar heating for buildings

A passive solar energy system is one in which the thermal energy flow is by natural means, that is by radiation, conduction, or natural convection. A survey of passive solar heating experience, especially in the U.S., is provided. Design approaches are reviewed and examples shown. Misconceptions are discussed. Advantages are listed. The Los Alamos program of performance simulation and evaluation is described and a simplified method of performance estimation is outlined.

Date: January 1, 1979

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Performance estimation using correlation methods

Correlation methods of prediction have advantages in greatly simplifying the time and complexity of performance predictions of passive solar buildings but are severely constrained in the number of variables which can be considered. Their accuracy is generally adequate for design purposes provided they are applied to buildings which correspond reasonably closely to the reference designs used in developing the correlations. The most simplified correlation procedures (such as the SLR method) are a… more

Date: January 1, 1980

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Performance simulation and prediction

Computational procedures useful during the passive solar design process are discussed. Analysis tools are described suitable for each of the three phases of design: rules of thumb for the concept development phase, quick-and-dirty techniques for the design development phase, and the monthly solar load ratio method for the final design phase. Issues are discussed regarding the role of simulation analysis during the design process.

Date: January 1, 1979

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Simulation of passive solar buildings

The use of simulation analyses as both a design and an evaluation tool is discussed. The reasons and techniques of simulation analysis are described and various possibilities discussed.

Date: January 1, 1978

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

State of the art in passive solar heating

The state of the art is outlined according to four major categories: passive solar practice, evaluation, design air, and products and materials. Needed future research activities and joint industry/government activities are listed. (MHR)

Date: January 1, 1981

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

State of the art in passive solar heating and cooling

Progress since the Albuquerque Passive Conference is discussed in terms of the major design approaches in buildings actually being constructed. Advantages and problem areas of each are described. Major areas where further work is needed are presented in detail.

Date: January 1, 1978

Creator: Balcomb, J. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Natural air motion in passive buildings

The nature of natural convection is described, and a design chart is presented appropriate to a simple, single-doorway situation. Natural convective loops that can occur in buildings are described and a few experimental results are presented. Observations of stratification are discussed, similitude experiments are described, and the beginnings of a complete-system mathematical model are presented.

Date: January 1, 1985

Creator: Balcomb, J.D. & Jones, G.F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Natural convection airflow and heat transport in buildings: experimental results

Observations of natural convection airflow in passive solar buildings are described. Particular results are given for two buildings supplementing other data already published. A number of generalizations based on the monitoring of the 15 buildings are presented. It is concluded that energy can be reasonably well distributed throughout a building by natural convection provided suitable openings are present and that the direction of heat transport is either horizontally across or upward.

Date: January 1, 1985

Creator: Balcomb, J.D. & Jones, G.F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Natural air motion and stratification in passive buildings

Natural convection is a major mechanism for heat distribution in many passive solar buildings, especially those with sunspaces. To better understand this mechanism, observations of air velocities and temperatures have been made in 13 different houses that encompass a wide variety of one- and two-story geometries. This paper extends previous reports. Results from one house are described in detail, and some generalizations are drawn from the large additional mass of data taken. A simple mathemati… more

Date: January 1, 1984

Creator: Balcomb, J.D.; Jones, G.F. & Yamaguchi, Kenjiro

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Natural convection airflow measurement and theory

Date: January 1, 1984

Creator: Balcomb, J.D.; Jones, G.F. & Yamaguchi, Kenjiro

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Passive solar energy information user study

The results of a series of telephone interviews with groups of users of information on passive solar heating and cooling are described. These results, part of a larger study on many different solar technologies, identify types of information each group needed and the best ways to get information to each group. The overall study provides baseline data about information needs in the solar community. An earlier study identified the information user groups in the solar community and the priority (t… more

Date: November 1, 1980

Creator: Belew, W.W.; Wood, B.L.; Marle, T.L. & Reinhardt, C.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Evaluation of passive solar retrofit options

An evaluation framework has been developed which allows for the assessment of the role of passive solar retrofit in the nationwide reduction of conventional fuel use. Three types of analysis are proposed within this framework: the physical/technical capability of the present housing stock to incorporate passive solar retrofit; the economic feasibility of the application of retrofit designs; and the actual market potential or acceptance of these alternative retrofit options. Each type of analysi… more

Date: January 1, 1980

Creator: Ben-David, S.; Kirchemen, C.; Martin, S.; Noll, S. & Roach, F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Passive solar calculation methods. Final report

An analytical treatment related to the generation of space specific weighting factors is presented using a recursion relationship which employs a heat balance of both the outside and inside surface. After which the multizone problem is discussed, the analysis of which is facilitated through the use of the calculated weighting factors. The use of frequency domain methods is detailed such that the amplitude ratio and phase shift characteristics for a sinusoidal excitation are derived for the ther… more

Date: June 15, 1979

Creator: Cumali, Z. O.; Sezgen, A. O. & Sullivan, R.

Item Type: Report

Partner: UNT Libraries Government Documents Department