Evaporative precooling system blue energy technologies. Loose flange this is usually used with a pressed collar, where the flange is placed behind the collar before the collar is welded to the pipe or tube. It also provides easy access for cleaning, inspection or modification. Blind flange this is a flange without a bore and is used to shut off a piping system or vessel opening. Evaporative cooling uses the fact that water will absorb a relatively large amount of heat in order to evaporate. Types of flange welding neck flange slip on flange socket weld flange lap joint flange threaded flange blind flange this youtube channel is dedicated to. An angle top is suitable for standard units with a 550x550 opening. Flanges provide access for when equipment or piping needs to be cleaned, inspected or reconfigured. A flange, abbreviated as flg, is a bolted connection where two pieces of pipe, equipment, fittings or valves are connected together to form a piping system. A straight top is suitable for breezeair contour range.
This evaporative cooling design guidelines manual for new mexico schools and commercial. Sizing evaporative coolers to select the size of an evaporative cooler, you have to consider the airflow and the size of the area you have in mind to cool. Capacities 50, 60, 70 and 80 are for dual furnace unit types only. Principles of evaporative cooling system pdh online. There are many common flange standards and flanges within the same standard can etiher be flat commonly cast iron, ductile iron or raised face commonly cast steel and stainless steel. Furnish proof satisfactory to the owner or his representative, of. Evaporative cooling systems meet a wide range of heating and ventilating requirements. Flange joint is an assembly of three different components. This manual is intended to be used as a tool for the design of successful and efficient evaporative cooling systems and will allow engineers to specify and design evaporative cooling systems with confidence. Advance flange isolation gasket kits are manufactured according to ansi b16.
Adsolair 5658 comfort air conditioning unit with heat. Forged flanges are used as a connection component for pipes, valves, pumps and other equipment to form a pipework system. In this manual, we will explore the principles of piping evaporative condensers, beginning with single condensers and exploring multiple condenser installations as well as thermosiphon and sub cooling piping systems. Side access or faceloading designs are available, filter sections are designed to accept frames for different filter types, to accomodate a variety of applications. These types of flanges are used in high pressure and temperature application. The flange is slipped over the pipe and then welded both inside and outside to provide sufficient strength and prevent leakage. The type of top is an optional extra and must be specified at the time of ordering. Evaporative cooling guidelines manual quick reference field guide lesson. Evaporative coolers are also known as swamp coolers, a system for homes and buildings which emits moisture to keep the air cool. Based on their construction the various types of evaporators are. The main difference with an indirect system is that a heat exchanger is used to cool the air supplied to the living space. Closed circuit cooling towers provide evaporative cooling for many types of. The evaporative cooling module shall be selfcontained.
They are available blank or bored to fit tube sizes 112 through 12 o. Experts say that in germany approximately 10% of the roughly 25,000 new hvac systems produced each year are equipped with this environmentally friendly cooling technology, and that this trend is increasing. These flange fittings are economical and reusable stainless steel fittings. Pressure reduction to d as caused by static height h.
Flanges dimensions and technical data flange weight ansi. The air system is used in the engines of motorcycles, scooters, aeroplanes and other stationary installations. Air cooled system is generally used in small engines say up to 1520 kw. Background evaporative condensers came into common use for. Evaporative condensers are used in refrigeration systems as an efficient means of heat rejection. It is referred to as a raised face because the gasket surfaces are raised above the bolting circle face. Vacuum flanges several vacuum flange standards exist with. The bare tube evaporators are made up of copper tubing or. Indirect evaporative cooling lowers the temperature of air via some type of heat exchanger arrangement, in which a secondary airstream is cooled by water and. An evaporative cooler is a device that cools air through the evaporation of water. Flanges are usually welded or screwed into such systems and then joined with bolts. These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end. Flange types a flange is a method of connecting pipes, valves, pumps and other equipment to form a pipework system. Their installation and specifically the installation of the piping to and from the evaporative condenser has a direct effect on their operation and the overall energy efficiency of the refrigeration system.
Flange pressure nominal, pn 20 50 68 100 150 250 420 pn is the rating designator followed by a designation number indicating the approximate pressure rating in bars. The elgen flange corner is designed to be used with the elgen flange system for rectangular ductwork. Our way of describing these items uses main manufacturing products standard catalog part numbering system as follows. They provide easy access for cleaning, inspection, modification or repairs. Below you will find a short description and definition of each type, completed with an detailed image. Developments in the evaporative cooling industry have reliably increased the efficiency. Learn different types of pipe flanges used in piping. It will consist of the component parts as listed in the following sections. Pipe flanges are used at places where piping, instruments, valves, equipment etc. This flange is circumferentially welded into the system. The weld neck or welding neck flange is bored to the id of the pipe and has a high neck to which pipe is welded. In a stainless steel pipe system, for example, a carbon steel flange can be applied, because they are not come in contact with the product in the pipe.
This face type allows the use of a wide combination of gasket designs, including flat ring sheet types and metallic composites such. Type d type d gaskets are specifically designed to fit into the ring groove of ringtypejoint flanges. Probably the best welding flange available because of its high, heavy neck. Indirect evaporative air conditioning seeley international. This method of cooling is popular in the dry climate of the southwestern united states. Reduced operating costs compared to expensive refrigeration system. Welding neck, slip on, socket weld, lap joint, threaded and blind flange. The elgen j flange is designed with two purposes in mind. Natural cooling of standalone houses using solar chimney. Blue energy technologies offers a most effective solution to increase the peak cooling capacity of air conditioning and cooling units without major modifications of your current system with the evaporative smart precooling system. The resulting 1939 edition contained standards for welding neck flanges com.
Flanges are usually welded onto pipes or screwed onto a threaded pipe end and then joined with bolts to make the connection. The direct evaporative cooling process in a psychrometric chart air at with dry bulb temperature 70 o f and relative moisture 60% state a is cooled down state b by evaporating water. Equipment cost is lower than a refrigeration system. For estimating the ventilation rate of the proposed solar house as a whole, it is important to determine the air flow rate which can be handled under a particular design and operating conditions. Pipe flanges and flanged fittings a105 weld neck flange. Holds ductwork together in conjunction with the elgen flange. The engineer or designer must choose among several flange options. At series 58 the total cooling capacity is further enhanced with an integrated compression refrigeration system. The raised face flange is the most common type used in process plant applications, and is easily to identify. In central hvac systems, cooling systems based on indirect evaporative cooling are becoming increasingly important. Above 24, please provide the specifications of your flange using our convenient worksheet. A revision was initiated in 1936, stimulated by suggestions from committee members and industrial users. Asaansikfqf these flanges are offered with choice of smooth face or oring groove. Additional decisions involve facing and surface finishes, and the appropriate.
To ensure your always familiar with these, here are 6 of the most common flange types. First off, the physics we want to analyze in this case is you guessed it heat transfer, involving both convection and conduction. A good installerretailer will also take into consideration your local humidity levels before giving you an accurate quote. New mexicans are most familiar with direct eacs that are also commonly used for residential cooling. Evaporative cooling differs from typical air conditioning systems, which use vaporcompression or absorption refrigeration cycles. Threaded flange threaded flanges are joined to pipes by screwing the pipe which has a male thread, generally npt per asme b1. Smart precooling system is the most effective pre cooling system for industrial and commercial cooling units. When warm, dry unsaturated air is pulled through a watersoaked pad, water is evaporated and is absorbed as water vapor into the air. Indirect evaporative air conditioners use a hyperefficient counterflow heat exchanger to produce 100% fresh, cool, outside air, with no added moisture. Following are the two type of cooling system for engine. This flange is used in preference to weld necks by many users because of its lower cost and the fact that less accuracy is required when cutting pipe to length. Most commonly used flanges are weld neck flange, slip on flange, blind flange, socket weld flange, threaded flange and lap joint flange rtj flange. Course contents evaporative coolers, often called swamp coolers, are cooling systems that use only water and a blower to circulate air.
Stainless steel integral cooling tower with submersible type pump. The number of outlets must be specified at the time of ordering. Flange tables flanges are commonly used to connect valves into pipework making it easier for removal and maintenance. Modeling the system includes the models of two distinctive devices. Direct evaporative cooling is designed to cool the air by evaporating water which. An obvious design parameter for this type of device is the cooling power, and the surface temperatures might also be of interest. Requirements with high thermal loads can be ideally met with the different cooling options of the units in series adsolair. Evaporative cooler engineering specification 598 1. As already described before, the most used flange types acc. Pad pattern and screw size, type oring or flat faced, port size and type, geometry, material, and options. The lap joint flange is practically identical to a slipon flange except it has a radius at the intersection of the bore and flange face. Regardless of size or specification, flanges are fundamentally designed to close, cover, connect, or support pipe systems.
Different types of flange faces are used as the contact surfaces to seat the sealing gasket material. Provides a sealing surface for the elgen 440 butyl gasket. Cooling flange 1 cooling flange in the chemical industry, processes often cool reaction fluids using glass flanges. Ansi standard flange dimensions are designated as 150, 300, 400, 600, 900, 1500, and 2500, in sizes nps 12 through nps 24. There are two basic types of evaporative air coolers eacs. A pipe flange connects piping and components in a piping system by use of bolted connections and gaskets. Evaporative cooling design guidelines ced engineering. The evaporators used for the refrigeration and the air conditioning applications have different types of construction depending on the application.
Catalog part numbering system six items will normally describe a flange. The six common types of ansi class flanges, including. An evaporative cooler also swamp cooler, swamp box, desert cooler and wet air cooler is a device that cools air through the evaporation of water. Indirect evaporative cooling works on the same principle as direct evaporative cooling lowering air temperature by causing water to evaporate. In the extreme case of air that is totally saturated with water, no evaporation can take place and no cooling occurs. Existing ducts for conventional heating, ventilation and air conditioning may work for swamp coolers depending on the size of. Heat transfer will occur via convection to and from the surfaces of the flange, while the flanges interior experiences conduction. Series 56 uses adiabatic evaporative cooling an achieves to cool up to 12 k with water. Types of cooling system in engine working and advantages. Understanding joints, connections and the most common flange types used in the oil and gas industry is a core requirement to keep these levels of safety and attitudes the same.
The process is indicated in the psychrometric chart below. In this video we will learn how many types of flanges available in piping industries like our facebook page do like. Evaporative cooling food and agriculture organization of. It also permits easy access to vessels or piping systems for inspection purposes.