Cleaning heat exchanger plates with special chemicals. Good maintenance habits for plate heat exchangers thermal tech. The normal maximum operating temperature for a plate heat exchanger is approximately 120 degrees celsius. Thank you for purchasing the hisaka plate heat exchanger. Pdf new plates for different types of plate heat exchangers. Connections holes matching the piping lead through the frame plate, permitting the media to enter into the heat. 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. Alfa laval plate heat exchanger maintenance manual by. 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. Plate heat exchanger installation and operation manual.
Bolt the connecting flange directly to the endplate using. 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. Pfx plate and frame heat exchanger armstrong fluid technology. Just like a car or a computer, a heat exchanger needs regular maintenance to keep running at peak performance.
Optimization of the liquid cooler condenser circuit. 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. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Plate heat exchanger maintenance manual customer name. The heat exchanger must be isolated from system vibrations using flexible piping connections and isolation pads on the mounting feet. Special consideration must be given to the endplate gaskets that seal the first thermal. Delivery of heat exchanger operating like it is new. 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. Installation operation commissioning maintenance na. They are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries, natural gas processing and sewage treatment. Reasonable price due to these features, the hisaka plate heat exchangers are highly appreciated in all industries. Operating any plate heat exchanger at temperatures above the design temperature of the gasket material will result in gasket and adhesive failure.
We fully disassemble, inspect, clean, dyetest, regasket, hydrotest, and reassemble your unit from start to finish. Parameters should result in a good shellandtube design that uses a minimum. The four holes in the plate are distinguished as 1, 2, 3, and 4 from their positions, and 0 means no hole. New plates for different types of plate heat exchangers article pdf available in recent patents on mechanical engineering. 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. 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. Install proper relief valves and temperature alarms to insure the heat exchanger isnt subject to conditions beyond the intended design. A habit of cursory visual examinations can save a lot of time and money in the long run. If the heat exchanger is being used with temperatures above 60. Quick startup and shutdown is a major cause of heat exchanger damage. Fortunately, plate heat exchangers are generally easier to maintain than other types of heat exchangers, and. 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. The heat exchanger supplied has three contact points on the ground, with feet provided for bolting to the concrete base if one is provided. There are 16 hole combinations possible depending on the application and temperature approach.
The system uses a number of small cylinders rather than a single large one, which offers numerous advantages. This deterioration in performance is typically due to the buildup of scale, sediment andor biological mass on the plates. The schedule assumes contherm or convap production operation of approximately 40 to 50 hours per week. Maintenance and cleaning may only be done with a shutdown heat exchanger. The media flowing through the heat exchanger should not. A technical reference manual for plate heat exchangers in. This means that the plate heat exchanger can also be dismantled for cleaning and maintenance. Pass pure water through the heat exchanger for 510 minutes. When starting up a plate heat exchanger for the first time, observe the following procedures. Gasketed plate heat exchangers hxxxliquid gasketed plate heat exchangers are particularly suitable for large fl ows and high cooling capacities. Maintenance of your plate and frame heat exchanger should be part of your scheduled service program. Production and supply of every type of nut and pin. Phe plate heat exchanger drawings mentioned in the manual are the.
Bolt the connecting flange directly to the endplate using the drilled and. Optimization of the unit cooler evaporator circuits. The plate pack is assembled between a fix frame plate and. Plate heat exchanger shall be installed on the concrete foundations by main. 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. 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. 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. The hisaka plate type heat exchanger has the excellent features as follows. The individual cylinders can be grouped in different arrangements to. Pdf a general paper on design and cost optimization of plate. The force distribution ensures optimum metal flow in the heat exchanger plate. Check that the plate pack dimension is within the limits specified on the drawing. To ensure youre keeping your plate heat exchanger phe properly maintained, you should keep basic records.
Following the instructions contained in this manual will extend the service. Maintaining a plate heat exchanger crane engineering. Our core maintenance program, full service package, provides multifaceted support to achieve. The information supplied in this manual is based on over four decades of field experience with our heat exchangers. The hot and cold fluids alternate between each of the plates. Proper maintenance and cleaning can prevent many typical problems.
This manual is applicable for all heat exchangers produced and supplied by. To determine the overall heat transfer coefficient in a. Pdf impacts of fouling and cleaning on the performance. 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. Plate heat exchanger installation method statement. Fast and detailed cleaning of heat exchanger plates. Failure to have a level site could result in the heat exchanger twisting and subsequently developing leakages. 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. Provide air vent valves for the heat exchanger so that it can be purged to prevent or relieve vapor or gas binding. Discharge the fluid with water and monitor the situation through the glass tube. 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 installation and operation manual please visit. Make sure the piping system is cleaned to prevent entrance of gravel, sand, welding flux, etc.
Paul mueller company academy recently posted an informative article, good maintenance habits for plate heat exchangers to help identify possible performance issues. Instruction manual plate heat exchangers it alfa laval. Its important to visually inspect the gaskets, frame and bars whenever you open up the heat exchanger for any kind of maintenance. Apr 21, 2015 plate heat exchanger lab report group b4 1. Be sure to keep the following documents in a safe place. A plate heat exchanger, phe, is a compact heat exchanger where thin corrugated plates some 0. The plate exchanger, shown below, consists of corrugated plates assembled into a frame. To reduce this impact, heat exchanger performance should be intelligently monitored and the heat exchanger cleaned at intervals. Heat exchangers on food duties should be cleaned every day, a suggested method is. Plates are pressurewashed, rinsed and subjected to either hot caustic stripping andor a manual procedure for gasket and scale removal. This manual is applicable for all heat exchangers produced and supplied by armstrong. Cleaning plate and frame heat exchangers tes engineering. Plate type heat exchangers operation and maintenance manual.
Install plate heat exchangers as indicated unless deviations to layout are approved on coordination drawings. Alfa laval aq4 alfaqtm ahricertified plate heat exchanger. These hindrances produce a resistance to energy flow. May 07, 2019 install plate heat exchangers as indicated unless deviations to layout are approved on coordination drawings. Plate heat exchanger repair valveforce valve repair. We fully disassemble, inspect, clean, dyetest, regasket, hydrotest, and reassemble your unit from start to. Plate heat exchanger calculation pdf logarithmic mean temperature difference. Plate heat exchanger maintenance periodic maintenance is.
Introduction a heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. 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. Pdf impacts of fouling and cleaning on the performance of. The hot fluid flows in one direction in alternating channels while the cold fluid flows in true countercurrent flow in the opposite alternating channels. Plate heat exchanger 2 operation and maintenance manual.
Counter flow heat exchangers are the most efficient of the three types. Higher temperatures may be reached with special gasket and adhesive materials. Brazed plate heat exchangers installation, operation, and maintenance manual 7 4. 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. Preventive maintenance checklist fall a preventive maintenance program is a way to assure that all mechanical equipment is operating efficiently and using energy wisely. Plate heat exchanger repair as with any other piece of plant or equipment, a heat exchanger needs regular maintenance to ensure optimum performance. Change in condensation and evaporation temperatures. If welding activities have to be carried out near the heat exchanger, never use the heat exchanger for earthing the construction work.
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. Wcr plate corrugations are designed to achieve turbulence across the entire heat transfer area. 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. The stack of heat transfer plates and gaskets is clamped. Pdf a plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat. 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. The last thing you want is a problem with a heat exchanger that holds up operations or affects product quality. Standard design the plate heat exchanger consists of a pack of. Plate heat exchanger service wcr service is the leader in the plate heat exchanger maintenance. 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.