Cleaning plate and frame heat exchangers tes engineering. Following the instructions contained in this manual will extend the service. In alfa laval plate heat exchangers, heat is transferred from one medium to another through thin metal plates which have been pressed into a special pattern. The hot and cold fluids alternate between each of the plates. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Connections holes matching the piping lead through the frame plate, permitting the media to enter into the heat. Bolt the connecting flange directly to the endplate using the drilled and. Plate heat exchanger repair as with any other piece of plant or equipment, a heat exchanger needs regular maintenance to ensure optimum performance. Impacts of fouling and cleaning on the performance of plate fin and spine fin heat exchangers article pdf available in journal of mechanical science and technology 1711. Plate heat exchanger maintenance manual customer name. Fast and detailed cleaning of heat exchanger plates. The force distribution ensures optimum metal flow in the heat exchanger plate.
Manuals for the hisaka plate heat exchanger consist of the following seven related documents. Quick startup and shutdown is a major cause of heat exchanger damage. Plate heat exchanger repair valveforce valve repair. Figure 8 heat transfer resistance between chambers of a plate heat exchanger heat energy has to get through media film boundary layers, process deposit layers and the plate before changing the temperature in the chambers. Pfx plate and frame heat exchanger armstrong fluid technology. The plate pack is assembled between a fix frame plate and. They are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries, natural gas processing and sewage treatment. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. Reasonable price due to these features, the hisaka plate heat exchangers are highly appreciated in all industries. Thank you for purchasing the hisaka plate heat exchanger.
Plate heat exchanger installation and operation manual please visit. May 07, 2019 install plate heat exchangers as indicated unless deviations to layout are approved on coordination drawings. Be sure to keep the following documents in a safe place. Figure 8 heat transfer resistance between chambers of a plate heat exchanger heat energy has to get through media film boundary layers, process deposit layers and the plate before changing the. The area should be level and clean of any foreign material. The schedule assumes contherm or convap production operation of approximately 40 to 50 hours per week. This manual is applicable for all heat exchangers produced and supplied by. Plate heat exchanger applications general heating and cooling duties.
The last thing you want is a problem with a heat exchanger that holds up operations or affects product quality. Optimization of the unit cooler evaporator circuits. Plate heat exchanger 2 operation and maintenance manual. To reduce this impact, heat exchanger performance should be intelligently monitored and the heat exchanger cleaned at intervals that are determined from optimal economic criteria. The stack of heat transfer plates and gaskets is clamped. The four holes in the plate are distinguished as 1, 2, 3, and 4 from their positions, and 0 means no hole. This deterioration in performance is typically due to the buildup of scale, sediment andor biological mass on the plates.
This manual is applicable for all heat exchangers produced and supplied by armstrong. Paul mueller company academy recently posted an informative article, good maintenance habits for plate heat exchangers to help identify possible performance issues. The plate type heat exchanger is the most efficient type of heat exchanger with its low cost, flexibility, easy maintenance, and high thermal transfer. The heat exchanger must be isolated from system vibrations using flexible piping connections and isolation pads on the mounting feet. Heat exchangers on food duties should be cleaned every day, a suggested method is. Pdf impacts of fouling and cleaning on the performance of. Parameters should result in a good shellandtube design that uses a minimum. The hisaka plate type heat exchanger has the excellent features as follows. Failure to have a level site could result in the heat exchanger twisting and subsequently developing leakages. Optimization of the liquid cooler condenser circuit. Proper maintenance and cleaning can prevent many typical problems. Plate heat exchanger calculation pdf logarithmic mean temperature difference. As a leading supplier of plate heat exchanger phe in the world, hisaka offers professional maintenance service program that maintains the phe performance over the products life cycle.
Standard design the plate heat exchanger consists of a pack of. To determine the overall heat transfer coefficient in a. Plate heat exchanger installation method statement. Pdf new plates for different types of plate heat exchangers. To ensure youre keeping your plate heat exchanger phe properly maintained, you should keep basic records. A plate type heat exchanger, as illustrated in figure 2, consists of plates instead of tubes to separate the hot and cold fluids. Pdf a general paper on design and cost optimization of plate. A plate heat exchanger, phe, is a compact heat exchanger where thin corrugated plates some 0. As requested, this plate heat exchanger report includes the overall heat transfer coefficient by varying hot and cold water flow rates in steadystate and batch operations.
C or with aggressive fluids, we advise you cover the heat exchanger with a screen plate to prevent the risk of touching. Plate heat exchanger service wcr service is the leader in the plate heat exchanger maintenance. Preventive maintenance checklist fall a preventive maintenance program is a way to assure that all mechanical equipment is operating efficiently and using energy wisely. Production and supply of every type of nut and pin. Phe plate heat exchanger drawings mentioned in the manual are the. Make sure the piping system is cleaned to prevent entrance of gravel, sand, welding flux, etc. Maintaining a plate heat exchanger crane engineering. Delivery of heat exchanger operating like it is new. This means that the plate heat exchanger can also be dismantled for cleaning and maintenance. We fully disassemble, inspect, clean, dyetest, regasket, hydrotest, and reassemble your unit from start to finish. Special consideration must be given to the endplate gaskets that seal the first thermal. We fully disassemble, inspect, clean, dyetest, regasket, hydrotest, and reassemble your unit from start to. Cleaning heat exchanger plates with special chemicals.
If welding activities have to be carried out near the heat exchanger, never use the heat exchanger for earthing the construction work. Instruction manual plate heat exchangers it alfa laval. The media flowing through the heat exchanger should not. Fall is the time of year when building operators need to prepare for the heating season so there is a smooth transition to cool weather. If the heat exchanger is being used with temperatures above 60. The heat exchanger supplied has three contact points on the ground, with feet provided for bolting to the concrete base if one is provided. Discharge the fluid with water and monitor the situation through the glass tube.
Maintenance of your plate and frame heat exchanger should be part of your scheduled service program. Introduction a heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. Pdf a plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat. Change in condensation and evaporation temperatures. Plate heat exchanger shall be installed on the concrete foundations by main civil contractor as per approved foundation drawings, ensure adequate space is available for valves, piping and for future maintenance. Installation operation commissioning maintenance na. Install plate heat exchangers as indicated unless deviations to layout are approved on coordination drawings. Standard design the plate heat exchanger consists of a pack of corrugated metal plates with portholes for the passage of the two fluids between which heat transfer will take place. A habit of cursory visual examinations can save a lot of time and money in the long run. The system uses a number of small cylinders rather than a single large one, which offers numerous advantages. Its important to visually inspect the gaskets, frame and bars whenever you open up the heat exchanger for any kind of maintenance. In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest coldfluid temperature greater than the coldest hotfluid temperatue. Plate heat exchanger shall be installed on the concrete foundations by main.
Gasketed plate heat exchangers hxxxliquid gasketed plate heat exchangers are particularly suitable for large fl ows and high cooling capacities. Plate heat exchanger maintenance periodic maintenance is. R sekulib university of kentucky introduction a heat exchanger is a device that is used for transfer of thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a. The information supplied in this manual is based on over four decades of field experience with our heat exchangers. There are 16 hole combinations possible depending on the application and temperature approach. When starting up a plate heat exchanger for the first time, observe the following procedures. Bolt the connecting flange directly to the endplate using. Brazed plate heat exchangers installation, operation, and maintenance manual 7 4. Alfa laval plate heat exchanger maintenance manual by.
Plates are pressurewashed, rinsed and subjected to either hot caustic stripping andor a manual procedure for gasket and scale removal. Fortunately, plate heat exchangers are generally easier to maintain than other types of heat exchangers, and. Wcr plate corrugations are designed to achieve turbulence across the entire heat transfer area. Apr 21, 2015 plate heat exchanger lab report group b4 1. A technical reference manual for plate heat exchangers in. The individual cylinders can be grouped in different arrangements to. Maintenance and cleaning may only be done with a shutdown heat exchanger. Install proper relief valves and temperature alarms to insure the heat exchanger isnt subject to conditions beyond the intended design. Cleaning plate heat exchangers d epending upon the nature of the fluids involved and the application, the heat exchangers performance level may decline over a period of time. Counter flow heat exchangers are the most efficient of the three types. Just like a car or a computer, a heat exchanger needs regular maintenance to keep running at peak performance. If the heat exchanger is located at the inlet or discharge of a blower with a pulsating flow, such as a roots type rotary lobe blower, the heat exchanger must be protected from the pulsation by a chambered silencer.
Alfa laval aq4 alfaqtm ahricertified plate heat exchanger. Operating any plate heat exchanger at temperatures above the design temperature of the gasket material will result in gasket and adhesive failure. Cleaning plate heat exchangers d epending upon the nature of the fluids involved and the application, the heat exchanger s performance level may decline over a period of time. New plates for different types of plate heat exchangers article pdf available in recent patents on mechanical engineering. Contherm scraped surface heat exchanger preventative maintenance schedules below is a periodic maintenance schedule for your contherm scraped surface heat exchanger or convap scraped surface evaporator.
Plate heat exchanger installation and operation manual. Check that the plate pack dimension is within the limits specified on the drawing. It is the responsibility of each person operating or working on phes to comply with all applicable safety regulations. The hot fluid flows in one direction in alternating channels while the cold fluid flows in true countercurrent flow in the opposite alternating channels.
Maintaining a plate heat exchanger and its related cost is not just a good idea it is a necessity for any successful business strategy concerned with its continued manufacturing productivity. The plate exchanger, shown below, consists of corrugated plates assembled into a frame. In alfa laval plate heat exchangers, heat is transferred from one medium to another through thin metal plates. Plate type heat exchangers operation and maintenance manual. R sekulib university of kentucky introduction a heat exchanger is a device that is used for transfer of thermal energy enthalpy between two or more. The normal maximum operating temperature for a plate heat exchanger is approximately 120 degrees celsius. Provide air vent valves for the heat exchanger so that it can be purged to prevent or relieve vapor or gas binding. To reduce this impact, heat exchanger performance should be intelligently monitored and the heat exchanger cleaned at intervals. Pass pure water through the heat exchanger for 510 minutes. Higher temperatures may be reached with special gasket and adhesive materials. Inspection of unit at regular intervals and as frequently as experience indicates, an examination should be made of the interior and the exterior of the heat exchanger. The plate heat exchanger consists of a pack of corrugated metal plates with portholes for the passage of the two fluids between which heat transfer will take place. Our core maintenance program, full service package, provides multifaceted support to achieve.
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