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Tuesday, July 28, 2020 | History

2 edition of New control design principles based on measured performance and energy analysis of HVAC systems found in the catalog.

New control design principles based on measured performance and energy analysis of HVAC systems

D. Hittle

New control design principles based on measured performance and energy analysis of HVAC systems

by D. Hittle

  • 31 Want to read
  • 39 Currently reading

Published by US Army Corps of Engineers, Construction Engineering Research Laboratory, Available from the National Technical Information Service in Champaign, Ill, [Springfield, VA .
Written in English

    Subjects:
  • Heating.,
  • Air conditioning -- Equipment and supplies.,
  • Ventilation.

  • Edition Notes

    Other titlesRetrofit control systems for energy conservation.
    Statementby Douglas C. Hittle, David L. Johnson.
    SeriesCERL interim report -- E-85/02., Interim report (Construction Engineering Research Laboratory) -- E-85/02.
    ContributionsJohnson, D. L. 1947-, Construction Engineering Research Laboratory.
    The Physical Object
    Pagination42 p. :
    Number of Pages42
    ID Numbers
    Open LibraryOL16613122M

    A classic in its field, Air Conditioning Principles and Systems. continues to fill the need for a text book on air conditioning systems that combines design principles with real-world applications. Readers will gain insight into the design, operation, and troubleshooting of new and existing air conditioning by: Employing high-performance HVAC equipment in conjunction with whole building design can result in significant energy savings. Typically, a 30% reduction in annual energy costs can be achieved with a simple payback period of about three to five years. And, if the payback threshold is extended to seven years, the savings can be about 40%. These.

    Heating, ventilation, and air conditioning (HVAC) is the technology of indoor and vehicular environmental goal is to provide thermal comfort and acceptable indoor air system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics and heat transfer."Refrigeration" is sometimes added to the field's abbreviation, as.   3. VAV systems now be designed to serve areas with as little as six tons of cooling load. Inlet vanes or, better yet, variable speed fans should be used to control air volume. 4. CO2-based control systems control the amount of outside air required for ventilation.

    The eighth edition has been updated to reflect the changes made in the new ASHRAE Handbook – Fundamentals, and contains the most current ASHRAE procedures, as well as information on the treatment of building HVAC systems – from basic principles through design and operation. The previous edition was published in Heating, Ventilation and Air-Conditioning (HVAC)systems are omnipresent in modern buildings. This book is an introduction to all those involved in the specification, design, manufacture, installation, operation or maintenance of these systems. The book explains: the objectives to be achieved by a system in terms of environmental control; the description of a system - including primary Reviews: 1.


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New control design principles based on measured performance and energy analysis of HVAC systems by D. Hittle Download PDF EPUB FB2

New Control Design Principles Based on Measured Performance and Energy Analysis of HVAC (Heating, Ventilating, and Air-Conditioning) Systems. This report is one of a series on the development of heating, ventilating, and air-conditioning (HVAC) control systems that are simple, efficient, reliable, maintainable, and by: 1.

New control design principles based on measured performance and energy analysis of HVAC systems Author: D Hittle ; D L Johnson ; Construction Engineering Research Laboratory (U.S.:. This paper describes the concept of using simulation as a tool for performance validation and energy analysis of HVAC systems.

Recent advances in control system technology, including the development of open protocols such as BACnet™ have made sensor and control signal information from various components and subsystems in a building more by: surface emits energy relative to a blackbody.

It depends strongly on the surface material and nish. Radiation may also be incidenton a surface from its surroundings. The radiation may originate from a special source, such as the sun, or from other surfaces to which the surface of interest is exposed. buildings are being used to characterize actual field performance of air-side systems.

The real performance of components such as fans, cooling coils, VAV boxes, reheat coils, and ductwork will be measured, with that data being used to calibrate simulation models.

The guidelines will be based on evaluation of design alternatives tested with these simulation models and tested, where feasible, in. inspection and energy auditing process of existing HVAC systems.

This paper presents the main findings obtained by the authors through the energy and performance monitoring of a set of tertiary buildings in Northern Italy, which include laboratories, hospitals, and office buildings of different ages. HVAC systems that have beenFile Size: KB. Approaches to Control of HVAC Systems For analysis of control methods for HVAC systems, it is first ne cessary to make a distinction by approaches.

In paper [5] author show s development of control methods in industry (not just in HVAC) through hist ory. Control strategies are developed in four stages, which can be seen inCited by: Aim of this thesis is to reduce energy consumptions by defining new HVAC control strategies and tuning control loops in Ozdilek Shopping Center “OSC”.

To investigate the potential for energy savings and to redefine control scenarios, an energy audit was carried out in OSC. According to these studies new strategies are implemented by the help of.

Low-velocity ductwork design is very important for energy efficiency in air distribution systems. Low- velocity design will lead to larger duct sizes, but it may be worth since, doubling of duct diameter will reduce friction loss by a factor of 32 times and will be less Size: KB.

Fundamentals of HVAC Controls The application of Heating, Ventilating, and Air-Conditioning (HVAC) controls starts with an understanding of the building and the use of the spaces to be conditioned and controlled.

All control systems operate in accordance with few basic principles but before we discuss these, let’s addressFile Size: KB. In the present paper, a procedure for deriving a dynamic model to control an HVAC system is investigated.

The HVAC system consists of a room, humidifier, heater, cooler, fan and ductwork. Energy and mass balance equations are applied in modeling the zone for cooling and heating by: load shedding, utilities monitoring/measurement for the purpose of monitoring energy performance contracts, and initial diagnosis of service calls.

Section of the Energy Policy Act of sets the absolute minimum building control requirements for commercial buildings at the level of ANSI/ASHRAE/IESNA Standard File Size: 63KB. This important new book bridges the gap between works on classical control and process control, and those dealing with HVAC control at a more elementary level, which generally adopt a qualitative and descriptive by: An engineering and economic analysis shall be performed in accordance with the procedure outlined by the DOE in the National Institute of Standards and Technology (NIST) Handbook dated February (or the approved latest edition) – Life-Cycle Costing Manual for.

Water with a specific heat of Btu/(lb F) is one of the best heat- accepting media. The energy acceptance capacity in a change of phase is called the.

latent heat of vaporization from liquid to gas (i.e., water to steam) and latent heat of fusion from liquid to solid (i.e., water to ice). Energy Performance Assessment of HVAC Systems Bureau of Energy Efficiency The accurate temperature measurement is very vital in refrigeration and air conditioning and least count should be at least one decimal.

Methods of measuring the flow In the absence of an on-line flow meter the chilled water flow can be measured by the follow-ing File Size: KB. Whole-Building Energy Modeling (BEM) is a versatile, multipurpose tool that is used in new building and retrofit design, code compliance, green certification, qualification for tax credits and utility incentives, and real-time building control.

ENERGY PERFORMANCE ASSESSMENT OF HVAC SYSTEMS Introduction Air conditioning and refrigeration consume significant amount of energy in buildings and in process industries. The energy consumed in air conditioning and refrigeration systems is sensitive to load changes, seasonal variations, operation and maintenance, ambient conditions Size: KB.

• The measure of energy the HVAC system needs to add or remove from a space to provide the desired level of comfort – Btu/h • Not the. size. of the HVAC system – First piece of information needed – 12, Btu/h = 1 Ton Cooling • Can be.

highly variable. What Is the Load. Exergy-Based Model Predictive Control for Building HVAC Systems quality of energy and is also a measure of sustainability. on analysis and design optimization of building systems based on.

A new ‘subsystems approach’ is introduced for the energy analysis of HVAC systems based on generation efficiency, transportation specific consumption and the ‘demand ratio’, a new measure.three current floor plans in order to locate the heating, ventilation, and air conditioning (HVAC) system in conditioned space.

The purpose of this project is to develop a cost-effective design for moving the HVAC system into conditioned space. In addition, BSC conducted energy analysis to.Principles of HVAC in Buildings by J. W. Mitchell and J. E. Braun provides foundational knowledge for the behavior and analysis of HVAC systems and related devices.

The emphasis is on the application of engineering principles, and features a tight integration of physical descriptions with a software program that allows performance to be directly calculated, with results that provide insight into actual behavior.