Xem 1-20 trên 35 kết quả Hvac design
  • While most HVAC designers will have the support of a competent electrical design staff, it is important to understand certain fundamentals of electricity, power distribution, and utilization, because so many HVAC system devices are mechanically driven and controlled. This book cannot present electrical topics in great detail, but it can address several common topics and refer to more definitive works.

    pdf14p babyuni 16-08-2010 86 30   Download

  • The design and construction of central plants for heating and cooling is one of the most challenging and interesting aspects of the HVAC design profession. Central plants range in size from small to very large, from residential to industrial utility scale. There are many areas of individual expertise and many levels of competence among designers.

    pdf32p babyuni 16-08-2010 65 28   Download

  • This invaluable handbook provides engineers and technicians with more than 5,000 calculations for solving day-to-day problems in all ten major engineering fields. The new Fourth Edition features numerous new areas from new design codes in civil engineering to miniaturization, new approaches to HVAC design, composite usage in engineering design, and laptop computer office and field calculations. "The Standard Handbook of Engineering Calculations" complies with new environmental requirements in engineering....

    pdf1125p kennybibo 14-07-2012 63 27   Download

  • Fluid mechanics is a fundamental branch of civil, chemical, and mechanical engineering which deals with the behavior of liquids and gases, particularly while flowing. This chapter provides a brief review of the vocabulary and fundamental equations of fluid mechanics, and reminds the HVAC designer of the scientific principles underlying much of the day-to-day applied science calculations. See Ref. 1 or a fluid mechanics text for additional detail.

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  • The HVAC designer cannot neglect consideration of the sound and vibration generated by HVAC equipment. This chapter briefly discusses the fundamentals of sound and vibration control. References for further study are cited at the end of the chapter.

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  • An HVAC designer is almost certain to be faced with the need to write reports. The ability to produce an organized, understandable, and succinct report will go far toward establishing credibility with both superiors and clients. Writing a good report requires the same attributes needed for success in any other area: understanding of basic principles, planning and organization, and careful investigation.

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  • A heating, ventilating, and air conditioning (HVAC) system is designed to satisfy the environmental requirements of comfort or a process, in a specific building or portion of a building and in a particular geographic locale. Designers must understand a great deal beyond basic HVAC system design and the outdoor climate. They must also understand the process or the comfort requirements.

    pdf10p babyuni 16-08-2010 103 52   Download

  • This chapter is devoted to ‘‘fundamental’’ fundamentals—certain principles which lay the foundation for what is to come. Starting with the original author’s suggested thought process for analyzing typical problems, the reader is then exposed to a buzzword of our time: value engineering. Next follows a discussion of codes and regulations, political criteria which constrain potential design solutions to the bounds of public health and welfare, and sometimes to special interest group sponsored legislation....

    pdf14p babyuni 16-08-2010 99 47   Download

  • Tham khảo sách 'hvac systems design handbook', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf334p tailieuvip14 26-07-2012 123 41   Download

  • All solutions to engineering problems start with a calculation or estimation of the duty which must be met (i.e., quantifying the problem). The purpose of heating and cooling load calculations, then, is to quantify the heating and/or cooling loads in the space(s) to be conditioned. Rough estimates of load may be made during the concept design phase.

    pdf56p babyuni 16-08-2010 96 38   Download

  • The purpose of this chapter is to outline the criteria used in the HVAC system and equipment selection process, to describe some of the systems and equipment available, and to develop some of the underlying philosophy and background related to system selection. Details of specific systems and items of equipment are discussed in later chapters.

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  • All air-handling units (AHUs) and many terminal units, if they are not self-contained, require a source of heating and/or cooling energy. This source is called a central plant, and the means by which thermal energy is transferred between the central plant and the AHU is usually a fluid conveyed through a piping system. The fluids used in HVAC practice are steam, hot or cold water, brine, refrigerant, or a combination of these. The equipment used to generate the thermal energy is described in Chap. 7. In this chapter we discuss the transport systems. ...

    pdf46p babyuni 16-08-2010 72 31   Download

  • In most HVAC systems, the final energy transport medium is moist air—a mixture of dry air and water vapor. This is conveyed through filters, heat exchange equipment, ducts, and various terminal devices to the space to be air-conditioned. The power to move the air is supplied by fans. This chapter discusses fans and duct systems, together with related subjects such as grilles, registers, diffusers, dampers, filters, and noise control.

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  • HVAC systems are sized to satisfy a set of design conditions, which are selected to generate a maximum load. Because these design conditions prevail during only a few hours each year, the HVAC equipment must operate most of the time at less than rated capacity. The function of the control system is to adjust the equipment capacity to match the load.

    pdf64p babyuni 16-08-2010 69 30   Download

  • During the past 20 years, design and operation of the comfort systems for buildings have been transformed because of energy conservation imperatives, the use of computer-based design aids, and major advances in intelligent management systems for buildings. In the 1970s, rules of thumb were widely used by designers. Today, a strong analytical basis for the design synthesis process is standard procedure. This handbook describes the latest methods for design and operation of new and existing buildings.

    pdf0p gian_anh 18-10-2012 46 28   Download

  • Heating is the first word in the acronym HVAC. It is the most important part because without heating mankind would have difficulty in surviving. Proper design of the heating system is even more critical than that of ventilation or cooling. Human history began to develop with the discovery and control of fire which increased people’s ability to survive in a harsh environment.overy and control of fire

    pdf46p babyuni 16-08-2010 103 27   Download

  • This chapter presents a basic overview of heat transfer fundamentals, particularly as they apply to HVAC. For a detailed, rigorous treatment, the reader should refer to a good college-level text on heat transfer or to the ASHRAE Handbook.

    pdf10p babyuni 16-08-2010 72 25   Download

  • Design documents evolve from and include the designer’s calculations, equipment selections, and sketches and are usually presented through formal drawings and specifications. These construction documents are the legal means by which the designer conveys the owner’s expectations to the contractor. The importance of good documentation cannot be overemphasized.

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  • Psychrometrics deals with the thermodynamic properties of moist air, which is the final heat transport medium in most air conditioning processes. The use of psychrometric tables and charts allows the designer to make a rational and graphic analysis of the desired air conditioning processes.

    pdf16p babyuni 16-08-2010 53 17   Download

  • While drawings and specifications in a sense are the designer’s end product, this is not really the case. From the owner’s point of view, the built and operating facility is the only real product. All other activity is only a prelude to the real thing. To truly succeed, the designer must follow the design through bidding and construction to start-up and eventual operation.

    pdf10p babyuni 16-08-2010 70 16   Download

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