Air Conditioning Principles and Systems An Energy Approach by Edward G. Pita P.E.

By Edward G. Pita P.E.

utilizing no less than arithmetic, this ebook explores the basic innovations of air-con and their program to systems—explaining all techniques in a transparent, useful demeanour, and concentrating on difficulties and examples normally encountered at the activity. This booklet comprises the latest and industry-wide approved details on load calculations, layout info, gear details, and use of the web. particular bankruptcy themes disguise the scope and makes use of of air con; actual ideas; heating so much; furnaces and boilers; hydronic piping platforms and terminal devices; cooling load calculations; psychrometrics; fluid move in piping and ducts; piping, valves, ducts, and insulation; fanatics and air distribution units; centrifugal pumps, enlargement tanks, and venting; air con platforms and kit; refrigeration structures and gear; automated controls; power usage and conservation; instrumentation, checking out, and balancing; and making plans and designing the HVAC process; and sun heating and cooling structures. For consulting engineers, mechanical contractors, HVAC engineers, designers, venture managers, and amenities managers.

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19. Health and safety ● ● ● ● ● 37 The stiles/strings are not cracked or have any warping The rungs are not split or dirty Tie-rods are not missing and are not damaged There is no wood rot or temporary repairs The ladder should not be painted as the paint may be hiding defects. For metallic (aluminium/stainless steel) ladders, the following should be checked: ● ● ● ● Short ladders can be carried by one person on the shoulder, in either the horizontal or vertical position. Longer ladders should be carried by two people horizontally on the shoulders, one at either end holding the upper stile.

A. Time ϫ Cost ϭ Risk b. Cost ϫ Likelihood ϭ Risk c. Consequence ϫ Cost ϭ Risk d. Likelihood ϫ Consequence ϭ Risk 3. Who is responsible for carrying out written risk assessments? a. The HSE b. You c. The client d. Your employer Introduction Access equipment refers to items, such as ladders, roof ladders, trestle scaffolds, independent scaffolds, putlog scaffolds and tower scaffolds. Access also includes working in excavations. Access equipment forms a very important part of site work, so it is vital that it is kept in good order.

G. flammable material. 3 Warning sign These signs are square or rectangular and show white symbols on a green background. g. first aid. The following section contains more examples of signs you will see at times on work sites. 5). 4 Information sign Some of these may be familiar to you, while you might not have seen others before. 5 Safety sign gallery Health and safety 25 they mean and to take notice of them. Again, when looking at the signs, try to make a mental note of which group they fit into – it is not a test, but will be good practice for future!

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