HVAC System For Shopping Mall - IJATIR

ISSN 2348–2370 Vol.10,Issue.04, April-2018, Pages:0391-0395 www.ijatir.org HVAC System for Shopping Mall 1 MOHD SOHAIL , MD NIYAZUDDIN2, MOHD ALEEMUDDIN AHMED3, MOHD ABDUL AZEEZ4, J. PRASEEP KUMAR5 Dept of Mechanical Engineering, SVITS, Mahbubnagar, Telangana, India. Abstract: The objective to design Heating, Ventilation & Air conditioning (HVAC) system for a commercial Building, with simultaneously controls its temperature, humidity, cleanliness, proper distribution, noise level, heat load calculation, fresh air, exhaust, duct design, pipe design, equipment selection and layout of accessories such as indoor and outdoor unit of the project. Cooling load will be calculated on E20 form. Indeed, today the emphasis is no more on understanding air conditioning ‘products’ but on creating ‘solutions’ and not just solutions, but ‘customized solutions’ that suit specific cooling needs of specific business and establishments. In this paper the aim is to design an air conditioning system for a shopping mall with proper distribution of air and also separate energy consumption system for different vendors. building may be divided into mechanical/ forced and natural types. II. LITERATURE REVIEW A. Types of Air-Conditioning Systems CommercialAir-ConditioningAccording To Application Industrial Air-Conditioning Keywords:HVAC, Air-Conditioning,Refrigeration, HACR. I. INTRODUCTION HVAC (heating, ventilating, and air conditioning; also heating, ventilation, and air conditioning) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a sub discipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers). HVAC is important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where safe and healthy building conditions are regulated with respect to temperature and humidity, using fresh air from outdoors. Ventilating or Ventilation (the V in HVAC) is the process of "changing" or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, and carbon dioxide. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, and prevents stagnation of the interior air. Ventilation includes both the exchange of air to the outside as well as circulation of air within the building. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a Fig.1. Basic Air-Conditioning system. B. Commercial Air-Conditioning According to Application This includes air-conditioning of multi room structure like apartments, hotels, office buildings and hospitals. Although treatment varies somewhat for these applications, the basic problems are the same. Individual control of room temperature is desirable. Cooling system should also be suitable for winter heating to eliminate duplication of risers and equipment. Unusual heat loads should be considered. Fan noise, air noise and cross talk between rooms through ductwork are undesirable. When these requirements are considered in conjunction with loads and equipment, it is not difficult to understand why quality air-conditioning for multi room buildings are more costly per unit capacity than many other types of comfort installation. Copyright @ 2018 IJATIR. All rights reserved.

MOHD SOHAIL, MD NIYAZUDDIN, MOHD ALEEMUDDIN AHMED, MOHD ABDUL AZEEZ, J. PRASEEP KUMAR conventional A/C processes unless re heat is used. The type 1. Air-Conditioning Of Multi Rooms Includes: Offices: Private offices involve problems of zoning and of system used depends largely on the size of the theatre. individual control. General offices and large open office Central equipment supplied by a water chilling plant is spaces may be treated as common units but it should be usually the best answer for large house and DX assembled recognized that it is not possible to satisfy every occupant of system or elf-contained units constitute the most economical general office. This does not mean that the system should selection for the neighborhood house. Air duct is preferably not be designed with proper capacity of air distribution. It accomplished by over load diffusers in order to minimize does mean that the temperature, which is satisfactory to drafts, but sidewall or rare wall outlets can e successfully majority of occupants, may fail to please too few. Space used where obstructions to throw are absent. Adequate used of conference and directors rooms requires special return air should be taken wherever cold spots make occur, treatment because of wide variation in occupancy and the as for example from front of theatre to rear of balcony and need for greater ventilation when occupants are smoking. It orchestra. Fan and air noise should be reduced to an is a good practice to provide a smoke exhausts system and acceptable limit. should be handled as separate zones. C. Industrial Air-Conditioning Hospital Private Rooms: Hospital needs a special There has some tendency to draw a sharp line of consideration as to whether or not air may be re circulated demarcation between systems designed for personnel and the extent to which it may be permitted. Frequently, a comfort and those designed for process control. The 100% outside air supply is required to avoid cross distinction hardly warranted because the procedure in both contamination. In many installations it may be necessary to instances must necessarily be identical. Special treatment provide equipment and devices that can be thoroughly may be necessary in some industrial application due to requirement of continues operation, 24 hrs a day & 7 days a cleaned and sterilized. week, or due to peculiar conditions of corrosion, Hotel Guest Rooms: The special features to be considered contamination hazards, concentrated heat load or other while air-conditioning hotel guest rooms. They are: adverse operating conditions. It is necessary for the designer Internal light and population is more compared to to understand the industrial process in order to minimize offices. hazards. Furthermore since conditions must be maintained Individual room temperature control is most desirable if regardless of outside weather conditions particular attention not essential. Temperature control devices should be should be directed to rugged and simple to operate. Adequate installation of roof and walls. In some cases respectively low room temperature at Adequate moisture barriers kin building construction, night are desired since this has an important bearing on particularly when high equipment capacity, appropriate load estimate should Double glass, block or no windows where high be made to determine the effect on equipment size. humidity is necessary for process during winter Particular air should be taken to avoid drafts and noise weather. in guest rooms. The use of shading screen, Venetian blinds or other The toilet exhaust should be designated to equal means of preventing the entrance of direct sunlight. approximately ventilation make up. Adequate ceiling weights to provide space for Fan or refrigeration rooms should never be located ventilation hood, air duct and pipes. directly above sleeping rooms. Even the best techniques The evaluation of the storage effect of structure, for concealing noise and vibration are not completely equipment and materials in process if operation is on effective in this situation. 24 hrs bases. Restaurants: Because of variation in loads, equipments that operate economically at partial capacity are required in addition to usual hear loads from people, light and expose to outside . [4] R. Sekret, M. Turski, Research on an adsorption cooling system supplied by solar energy, Energy and Buildings 51 (2012) 15–20. [5] D.S. Kim, C.A. Ferreira, Solar refrigeration options – a state-of-the-art review, International Journal of Energy Research 31 (1) (2008) 3–16. [6] R. Ali, G. El, Operational results of an intermittent absorption cooling unit, International Journal of Energy Research 26 (2002) 825–836. Fig.6. Design Drawing of 2 To 8 Floors. International Journal of Advanced Technology and Innovative Research Volume. 10, IssueNo.03, March-2018, Pages: 0391-0395

HVAC System for Shopping Mall Author’s Profile: Mohd Sohail, B.Tech student in the Mechanical Engineering from Sri Visvesvaraya Institute of Technology and Science, MBNR. MD.Niyazuddin, B.Tech student in the Mechanical Engineering from Sri Visvesvaraya Institute of Technology and Science, MBNR. Mohd Aleemuddin Ahme, B.Tech student in the Mechanical Engineering from Sri Visvesvaraya Institute of Technology and Science, MBNR. Mohd Abdul Azeez, B.Tech student in the Mechanical Engineering from Sri Visvesvaraya Institute of Technology and Science, MBNR. J. Pradeep Kumar,Asst. Professor Mechanical Engineering from Sri Visvesvaraya Institute of Technology and Science, MBNR. International Journal of Advanced Technology and Innovative Research Volume. 10, IssueNo.03, March-2018, Pages: 0391-0395

design an air conditioning system for a shopping mall with proper distribution of air and also separate energy consumption system for different vendors. Keywords:HVAC, Air-Conditioning,Refrigeration, HACR. I. INTRODUCTION HVAC (heating, ventilating, and air conditioning; also heating, ventilation, and air conditioning) is the technology