The pressure drop is an important parameter that needs to be considered in the design and optimization of a plate heat exchanger. 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. Optimisation of plateplatefin heat exchanger design. Hisaka websimulator hws plate heat exchanger this is the. Optimisation of plateplate fin heat exchanger design kunpeng guo the university of manchester 2015 abstractphd thesis with increasing global energy consumption, stringent environmental protection. Please note that the software can only do the basic design calculations the mechanical design. Nov 22, 2017 plate heat exchanger, how it works working principle hvac industrial engineering phx heat transfer duration. Therein, popular analytical techniques such as log mean temperature difference lmtd and effectivenessnumber of.
Access the url below and click on the websimulator icon. To solve a thermal problem, we need to know several parameters. Gasketed plate heat exchanger design free download and. All these heat exchangers can be operated in both parallel and. Simplified heat exchanger design calculations 1 if inlet temperatures, mass flow rates and one of the outlets temperatures are known 1. Plate heat exchanger design calculations pdf onasytef. The calculations are performed through a series of click buttons arranged in order. Description the optimised plate structure of the concitherm series makes it possible to have wide gaps with only a few contact points over up to 1.
Gasketed plate heat exchanger design 2020 free download for windows 10, 8. Optimisation of plateplate fin heat exchanger design kunpeng guo the university of manchester 2015 abstractphd thesis with increasing global energy consumption, stringent environmental protection legislation and safety regulations in industrialised nations, energy saving has been put under high priority. A plate type heat exchanger, as illustrated in figure 2, consists of plates instead of tubes to separate the hot and cold fluids. The choice of shell and tube type is determined chiefly by factors such as the need for the provision for differential movement between shell and tubes, the design pressure, the design temperature, and the fouling nature of the fluids rather than the function. A plate heat exchanger is a compact type of heat exchanger that uses a. Unit operations lab heat exchanger 11 heat exchanger heat exchange is an important unit operation that contributes to efficiency and safety of many processes. Gasketed plate heat exchangers hxxxliquid gasketed plate heat exchangers are particularly suitable for large fl ows and high cooling capacities. A plate andframe heat exchanger figure 1 consists of pressed, corrugated metal plates. In any process, it should be kept as close as possible to the design value, with a tolerance range established according to the available pumping power. Process fluid assignments to shell side or tube side. Calculate the overall heat transfer coefficient u 4. Plate heat exchanger design in excel free download as excel spreadsheet. The optimum thermal design of a shell and tube heat exchanger involves the.
In process calculations, the main objectives of heat exchanger calculations are to determine the heat duty amount of energy to be transferred, temperature changes within the exchanger, and pressure drops. Once the technological choices made, we will proceed to the design of the heat exchanger, i. They will also calculate the number of tubes needed for a shell and tube heat exchanger and to calculate the pipe length needed for a double pipe heat exchanger. Gasketed plate heat exchanger design software thermal. The basic design equation and overall heat transfer coefficient the basic heat exchanger equations applicable to shell and tube exchangers were developed in chapter 1. An important, exclusive feature of the plate heat exchanger is that by the use of special connector plates it is possible to provide connections for alternative fluids so that a number of duties can be done in the. Heat transfer theory tells us that the log mean temperature difference is the average temperature difference to use in heat exchanger design equation calculations. Pdf design and analysis of a plate heat exchanger in the view of. How to design a tubular heat exchanger hrs heat exchangers.
Fluid engine oil sea water inlet temperature, c 65 20 outlet temperature, c 55 25 heat load, kw 117. Thermal and fluid dynamical design is the main and substantial step to heat exchanger design. Gasketed plate heat exchanger design phex is a software tool that is made to demonstrate the thermal analysis and calculations of gasketed plate heat exchangers. It is first necessary to validate the data of the thermal program, with the following 3 formulas. According to the engineers calculations, these basic parameters should result in a good shellandtube design that uses a minimum amount of c276 material. Pdf heat exchanger design handbook matt pennington.
The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design parameters. 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. Plate heat exchanger design calculations pdf a heat exchanger follows this principle in its endeavour to. The design margin pdftk without java m is calculated as.
Phex is an easy to use tool which demonstrates the thermal calculations of gasketed plate heat exchangers. Our gasketed plate heat exchanger range is the result of decades of experience, research and development in heat transfer technology. A practical guide for planning, selecting and designing of shell and tube exchangers takes users on a stepbystep guide to the design of heat exchangers in daily practice. Heat exchangers 73 individual thermal resistances of the system. Heat exchanger calculations and design with excel spreadsheet. Exchanger design the design of heat exchangers is done in two steps. Plate heat exchanger design in excel fluid dynamics. Standard design the plate heat exchanger consists of a pack of. It is not uncommon for plateandframe heat exchangers to have overall heat. I have been reading about phes, however i have not come across any methods for calculating the number of plates required in phes. The hot and cold fluids alternate between each of the plates.
Validation of the thermal program once the technological choices made, we will proceed to the design of the heat exchanger, i. Complete design of plate heat exchanger made in excel. A plateandframe heat exchanger figure 1 consists of pressed, corrugated metal plates. Plate heat exchanger design in excel fluid dynamics flow.
Heat exchanger theory and the heat exchanger design equation. Each heat exchanger is a bespoke product, designed by iteration and consultation with customers to provide optimal cost and performance i. Gasketed plate heat exchanger design 2020 setup free. Plate heat exchanger, how it works working principle hvac industrial engineering phx heat transfer duration. Thermal and fluid dynamical design is the main and. You can simulate the plate heat exchanger perfect for your needs, any time of the day, from anywhere.
Combining each of these resistances in series gives. The two most common heat exchanger design problems are those of rating and sizing. Here, we will cite only those that are immediately useful for design in shell and tube heat exchangers with sensible heat transfer on the shellside. Different types of heat exchangers are shown in figure 42.
Calculating number of plates in plate heat exchangers. Make an initial estimate of the overall heat transfer coefficient, u, based on the fluids involved. Chapter 5 heat exchangers faculty of engineering and. This thesis has major impact in analyzing plate heat exchanger assembly using cfd and correcting the corelations for analytical calculations. High value for overall heat transfer coefficient, for the same two fluids, a flat plate heat exchanger typically has a u value much higher than either a shell and tube heat exchanger or a spiral heat exchanger. Design a plate heat exchanger by according more advantages and evaluate the cost of newly. John richard thome ltcm sgm epfl heat transfer heat exchanger design 1er mars 2008 7 41. A plate heat exchanger is a compact type of heat exchanger that uses a series of thin plates to transfer heat between two fluids.
First, thermal and fluid dynamical design and then mechanical design. Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. Plate type heat exchanger design linkedin slideshare. Shell and tube heat exchangers basic calculations pdh online. This means that the plate heat exchanger can also be dismantled for cleaning and maintenance. Alfa laval gasketed plate heat exchangers are the most costeffective solution. Pdhonline course m371 2 pdh shell and tube heat exchangers. In process calculations, the main objectives of heat exchanger calculations are to determine the heat.
The amount of heat to be transferred heat load the inlet and outlet temperatures on the primary and secondary sides. Design of rectangular offset compact plate fin heat 6. This paper discusses the design and surface enhancement considerations that lead to optimal heat exchanger designs. Alfa laval aq4 alfaqtm ahricertified plate heat exchanger. The total overall heat transfer coefficient k is defined as. Calculating number of plates in plate heat exchangers posted in student. In design of sthe, you assume a value of u and perform iterations to see if the assumed value meetsexceeds ht or pressure. I have been reading about phes, however i have not come across any methods for calculating the number of plates required in. The stack of heat transfer plates and gaskets is clamped.
The stack of heat transfer plates and gaskets is clamped together with bolts in a frame. Pdf redesigning of a system is a modification of existing system for reducing the. With the heat exchanger geometry defined, the mechanical design calculations must be performed to ensure that the heat exchanger design is valid for the design. Pdf modeling and design of plate heat exchanger researchgate. With the heat exchanger geometry defined, the mechanical design calculations must be performed to ensure that the heat exchanger design is valid for the design pressure and conditions. The choice of shell and tube type is determined chiefly by factors such as the need. The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design parameters which can be summarized as follows. Plate heat exchanger calculation method alfa laval. Modeling and design of plate heat exchanger intechopen. 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. Calculate the required heat transfer rate, q, in btuhr from specified information about fluid flow rates and temperatures. Heat transfer equipment may be designated by type or function it performs, such as chiller, condenser, cooler reboiler, etc. It is not uncommon for plate andframe heat exchangers to have overall heat. The basic heat exchanger design equation can be used for a variety of types of heat exchangers, like double pipe heat exchangers or shell and tube heat exchangers.
Phex is an easy to use tool which demonstrates the thermal calculations of gasketed plate heat exchangers, the plate dimensions and materials can be entered, this includes the size of plate heat. A practical guide for planning, selecting and designing of shell and tube exchangers takes users on a stepbystep guide to the design of heat exchangers in daily practice, showing how to determine the effective driving temperature difference for heat transfer. This calculates the required heat transfer surface and pressure drop for the heat exchanger. Design a double pipe heat exchanger with bare inner multitubes that can be used to cool engine oil with cold sea water. Can someone please explain how the number of plates are calculated. The software has been tested using real data and results show that it generates accurate data throughout all calculation steps. Calculate q and the outlet temperature using energy conservation 2.