Course module basic 2 dimensional drawing working on x,y coordinates getting familiarize with 2 dimensional tool. The process flow diagrams for the simple and with flash economizer refrigeration systems are shown in. Propane refrigeration is a type of compression refrigeration. Module 2 propane refrigeration loop add and connect unit to build a flowsheet understand forwardbackward information propagation in aspen hysys convert a case to a template. Enerflex offers a wide range of refrigeration capacities, from. Mechanical refrigeration, propane refrigeration loop, hysys simulation, lpg recovery, ngl processing. Optimization of the aforementioned system is performed for two. Is the basic engineering software, which all beginners in field of engineering and science need to get acquitted to. The power consumption comes from the compressors and seawater pumps, as calculated by hysys software.
The details of a simple singlestage refrigeration system and a twostage refrigeration system employing one flash tank economizer are given in chapter 16 of gas conditioning and processing, volume 2 1. This software is suitable for drafting and modeling. The refrigeration plant is a simple propane refrigeration loop built within a subflowsheet for ease of visualization. Getting started with aspen hysys, aspen hysys simulations, oil characterization, ngl fractionation, propane refrigeration loop, select a property package to define a fluid package, gas gathering system. The production of propane is through fractionation of ngl. The propane enters the cooler at 25 c, 300 kpa, and kgmoleh, and the pressure drop across the cooler is 15 kpa. Learn aspen hysys at your own convinent time and place. Lpg recovery process using refrigeration loop simulation and. Optimization of propane precooled mixed refrigerant lng. Refrigeration loop with economizer in hysys chemical. Simple gas plant attendees will work through a method to determine the optimal combination of refrigeration and jt. By having a valid data from the propane loop, a simulation can be continued by replacing composition from propane to carbon dioxide. The objective function of the mcr cycle optimization and propane cycle optimization is to reduce the total power consumption of the apci lng plant.
The model in hysys is treated as a black box in this optimization study. The continuous absorption type of cooling unit is operated by the application of a limited amount. Aspen hysys training process simulation training course. Refrigeration with flash economizer vs simple refrigeration.
In order to set the flowrate of propane circulating in the loop it is necessary to initialize one of the streams of the loop, here the stream. Add and connect operations to construct a simple flow sheet. The vapor compression refrigeration cycle is the most common method used for removing heat from a lower temperature level to a higher temperature level using a mechanical work. Simulation of a propane refrigeration loop ludwigs applied. Performance evaluation of refrigeration units in natural gas. The refrigeration cycles can also be represented in a ph diagram. The continuous absorption type of cooling unit is operated by the application of a limited amount of heat furnished by gas, electricity or kerosene. Chemical process design tutorial assignment 2 figure 1 depicts a process in which a stream of propane 5 is cooled from 25 c to 5 c using a refrigeration cycle. Experienced engineering consultants, with an extensive knowledge of the subject, design all of our products.
The process consists of a refrigeration compressor, refrigeration condenser. Micropipe and microcalc are currently our main products. The amount of energy depends on the quantity of heat to be pumped chiller duty. The objective of a refrigeration system is to pump low temperature heat from the process fluid to high temperature ambient where it is rejected to the environment. Oct 16, 20 propane refrigeration loop diamond cube demo. A propane refrigeration loop will be used to provide the chilling duty. Use the graphic interface to manipulate flow sheet objects and provide a clearer representation of the process. Tejan patel student fundraiser purdue university linkedin. The process utilizes a closed propane refrigeration loop green streams around a brazed plate fin heat exchanger. Ludwigs applied process design for chemical and petrochemical plants, volume 3, fourth edition is a true applicationdriven book. Designed the flowsheet of propane refrigeration loop in aspen hysys performed the steady state simulation using peng robinson package to obtain the process parameters performed the. Use of propane enthalpy diagram to validate the software.
Ph diagram representation of a dry refrigeration cycle. That means offering ontarget products and services, maximizing profit margins and recognizing opportunities for growthall this while providing excellent customer service. Propane r290 has been used successfully in industrial refrigeration for many years, and is emerging as an increasingly viable alternative for homes and businesses. Understand forwardbackward information propagation in hysys. Learn to build, navigate and optimize process simulations using simulation software learn to evaluate the performance of existing equipment the course shall cover the below modules getting started module propane refrigeration loop refrigerated gas plant ngl fractionation train oil characterization gas gathering. Propane cycle optimization resulted in a savings of 17. Condenser outlet temperature streem 2 55 c condenser outlet vapours fr streem 20 chiller in pressure streem 8 0. Boanerges energy limited software training overview facebook. Here is the technical data on how gas or heating elementdriven absorption systems cool your lp fridge or freezer. In this study, all of the simulations were performed by hysys software 2. Hello dear all, i am currently work with refrigeration propane loop in hysys. Use the case study feature to run flowsheetwide scenarios. To learn more about the basics of the hysys interface, see chapter 1 interface in the user guide.
Refrigeration loop with economizer in hysys posted in chemical process simulation. Effect of impurities on propane refrigeration system. Enerflex refrigeration systems are utilized around the world providing efficient cooling for a variety of applications beyond gas processing, such as co 2 scrubbing in clean coal power generating facilities. The simulation of process units in propane refrigeration cycle involves the applications of thermodynamics principles to the following. U k based white rose software specialises in the research and development of engineering design software for the refrigeration industry. Refrigeration systems are commonly found in the petroleum refining and gas processing industries, and refrigeration is employed to cool a gas to meet a hydrocarbon dewpoint specification and to produce a marketable liquid. In this case study, a propane refrigeration loop is. The minimum approach temperature within the chiller will be 10f. Refrigeration basics and lng university of oklahoma. Process structure and parameters given process inputs given process outputs unknown fig. Define and analyze a vacuum tower with heat integration. Illustration of the results on phase envelope diagram. Therefore, propane as the working fluid has normally a small fraction of ethane and butanes.
Improvement of loop performances by addition of an intermediate expansion. Wet refrigeration cycle the expander has been substituted by a throttling valve. The design of a chemical plant using hysys simulation program. The initial gas mixture methane and lpgs is sent in a twophase separator s101 in order to eliminate the heaviest compounds which are sent to the distillation column c101. Propane refrigeration loop fundamentals attendees will add and optimize a propane loop onto their refrigeration plant. Using the spread sheet to calculate the cop coefficient of performance for the loop. Use graphical interface to manipulate flowsheets in hysys. The optimum composition of refrigerant mixture obtained was compared with two optimized compositions of refrigerant mixtures from the open literature. Performance evaluation of refrigeration units in natural. Course outline hysys simulation training in nigeria. Learn aspen hysys at your own convinent time and place complete video tutorial by loyem2008. Tutorial 2 refrigeration cycle chen 470 chemical process. Introduce the hysys oil manager and the oil characterization process. Understand how to simulate the vapour compression loop.
The process flow diagrams for the simple and with flash economizer refrigeration systems are shown in figure 1. If an expander had been used the line from d to a would be a vertical line. Optimization of propane precooled mixed refrigerant lng plant. Propane r290 has been used successfully in industrial refrigeration for many years, and is emerging as an. A simple model of propane refrigeration loop is used to create a steady state simulation using aspen hysys 7. Then a coded genetic algorithm from matlab software is linked to hysys software to optimize the propane mixed refrigerant process.
Choosing a backup generator plus 3 legal house connection options transfer switch and more duration. Introduction to hysys simulation software and its functions. Simple gas plant attendees will work through a method to determine the optimal combination of refrigeration and jt based on a given inlet and product specification. Introduce mathematical operations, starting with the balance and adjust. It provides clarity and easy access to essential process plant data and design information. Process modeling using hysys propane refrigeration loop propane refrigeration loop 2005 aspentech. The propane refrigeration loop can operate with an unspecified circulating propane flowrate, as it is a closed loop the flow among c07 and the flow of c exit are equal. A simple approach to calculateminimize the refrigeration. White rose software refrigeration system design software. Execute flash calculations in aspen hysys attach stream utilities understand the color scheme employed by aspen hysys.
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