tag:blogger.com,1999:blog-46439971590593423232012-02-01T12:49:23.329+05:30Empowering HVAC IndustryKhaleel Ahamednoreply@blogger.comBlogger141100tag:blogger.com,1999:blog-4643997159059342323.post-8208556687300025342011-02-24T11:57:00.000+05:302011-02-24T11:57:45.461+05:30

ACREX India, the ‘coolest event’ of the year, starts today at New Delhi. ACREX India has steadily grown since its inception and convinced everyone with its brilliant performance in 2010 with more than 300 exhibitors and over 20,000 trade visitors. In its 12th edition, ACREX India 2011 returns to New Delhi with a promise to surpass all previous expectations and to offer a perfect stage for

Khaleel Ahamednoreply@blogger.com1tag:blogger.com,1999:blog-4643997159059342323.post-67758469245200385922010-10-28T10:06:00.001+05:302010-10-28T10:07:26.677+05:30

ASHRAE is making its energy standard, 90.1-2007, available as a free download for a limited time. Through a funding contract with the Department of Energy, the I-P edition of ANSI/ASHRAE/IES Standard 90.1-2007, Energy Standard for Buildings Except Low-Rise Residential Buildings, is being offered as a free downloadable PDF file. “Making the standard available for free ensures that it penetrates

Khaleel Ahamednoreply@blogger.com1tag:blogger.com,1999:blog-4643997159059342323.post-47490661800040066002010-02-19T18:26:00.000+05:302010-02-19T18:26:01.874+05:30

The Indoor Air Quality Guide: Best Practices for Design, Construction and Commissioning is designed for architects, design engineers, contractors, commissioning agents, and all other professionals concerned with IAQ. This comprehensive publication provides both summary and detailed guidance. To download the Guide for Free Click Here

Khaleel Ahamednoreply@blogger.com1tag:blogger.com,1999:blog-4643997159059342323.post-85237885082276742032010-02-16T12:49:00.000+05:302010-02-16T12:49:33.320+05:30

The largest international exhibition in India, ACREX India 2010 has been organized by ISHRAE in association with ASHRAE India Chapter and All India Air-Conditioning and Refrigeration Association (AIACRA). It starts on 17th February 2010 at Bombay Exhibition Center at Mumbai. It will be four days event.The exposition aims to showcase the global HVAC & R industry. Featuring a series of technical

Khaleel Ahamednoreply@blogger.com0tag:blogger.com,1999:blog-4643997159059342323.post-12674622597205285752010-01-05T07:43:00.000+05:302010-01-05T07:43:28.999+05:30

1 TR = 12000 BTU/Hr 1Watt=3.412 BTU/Hr 1TR=3.516 Watts 1Watt=Q x Cp x Dt Where Q - Flow of water in Ltr/Sec             Cp - Specific Heat of Water (4.186 J/g'C)             Dt - Temp difference in 'C 1TR = (gpm x Temp Diff in 'F)/24 Sensible Heat (BTU/Hr) = 1.08 x Q x Dt Where Q - Air Flow Rate in CFM            Dt - Diff of Entering/Leaving Air Temperature in 'F Latent Heat (Btu/Hr) = 0.6

Khaleel Ahamednoreply@blogger.com1tag:blogger.com,1999:blog-4643997159059342323.post-79097142139711903032009-12-26T12:31:00.000+05:302009-12-26T12:31:59.713+05:30

One ton refrigeration ton(TR)was defined as the heat absorved by the one ton of ice (2000 pounds) causing it to melt completely by the end of one day ( 24 hours). The COP is the ratio of the heat removed from the cold reservoir to input work.The EER is the efficiency rating for the equipment at a particular pair of external and internal temperatures.If a chiller's efficiency is rated at 1 KW/TR,

Khaleel Ahamednoreply@blogger.com1tag:blogger.com,1999:blog-4643997159059342323.post-91454795978992014522009-09-10T09:27:00.000+05:302009-09-10T09:28:33.425+05:30

ASHRAE has released a new guide on building information modeling (BIM). According to Dave Conover, a member of the BIM Steering Committee, the guide "provides some broad level insight into how BIM will affect the building industry in general." The guide includes a list of software to help engineers choose which is best for them. An Introduction to Building Information Modeling is available as a

Khaleel Ahamednoreply@blogger.com0tag:blogger.com,1999:blog-4643997159059342323.post-5974287943203092482009-06-18T12:41:00.001+05:302009-06-18T12:41:35.987+05:30

The LEED rating system is a voluntary, consensus-based national system for designing, building, operating and certifying high-performance, and sustainable buildings. LEED defines green building by providing a standard for measurement, and serves as a design guideline to help green designers and builders achieve the positive results they intend. Additionally, the standard prevents false or

Khaleel Ahamednoreply@blogger.com2tag:blogger.com,1999:blog-4643997159059342323.post-32176797776112574642009-05-12T12:50:00.001+05:302009-05-12T12:50:34.661+05:30

There is a rating developed by the Air Conditioning & Refrigeration Institute (ARI) for chiller performance. It is termed IPLV/NPLV, part of ARI Standard 550/590-98. IPLV stands for Integrated Part Load Value and NPLV is for Non standard Part Load Value. The rating uses weather data based on weighted average of 29 cities where 80% of the chillers were purchased over a period of 25 years. This

Khaleel Ahamednoreply@blogger.com6tag:blogger.com,1999:blog-4643997159059342323.post-85196914092495278672009-04-25T16:50:00.003+05:302009-04-27T18:10:44.291+05:30

Air Conditioning systems use an air distribution network by ducts to circulate conditioned air to all the conditioned spaces in retail, office or residential buildings. To maintain uniform temperature throughout the space efficiently, the system should be designed properly.Ducts can be classified by its applications and pressure.ApplicationsResidential, Commercial and Industrial

Khaleel Ahamednoreply@blogger.com1tag:blogger.com,1999:blog-4643997159059342323.post-7443789594164328012009-04-21T11:20:00.002+05:302009-04-27T18:11:11.101+05:30

A refrigerant is a fluid used in refrigeration system to transfer energy by its phase change from liquid to gas and vice versa. The refrigerants are used in Domestic Refrigerators, Air Conditioners and Central Chilling Plants. The best suitability of a refrigerant for a particular system is based on its thermodynamic properties, chemical properties, physical properties, safety and economic

Khaleel Ahamednoreply@blogger.com1tag:blogger.com,1999:blog-4643997159059342323.post-87063684370924383722009-04-15T19:15:00.002+05:302009-04-27T18:12:26.265+05:30

American Society of Heating Refrigeration Air Conditioning Engineers (ASHRAE) has given an opportunity to download its advanced energy design guides for small warehouse, office buildings, retail buildings and school buildings for free. To download it free you will need to register at http://www.ashrae.org/freeaedg

Khaleel Ahamednoreply@blogger.com0tag:blogger.com,1999:blog-4643997159059342323.post-24135347752342955132009-04-12T11:31:00.004+05:302009-04-12T11:46:20.320+05:30

Refrigeration deals with the transfer of heat from a low temperature level at the heat source to a high temperature level at the heat sink by using a low boiling refrigerant.Depending on applications, there are several types of equipments are available for useas given below:Air ConditioningWindow/Split/Package Air ConditionersFan Coil UnitsAir Handling UnitsRefrigeration SystemsSmall capacity

Khaleel Ahamednoreply@blogger.com1tag:blogger.com,1999:blog-4643997159059342323.post-80614583340222315862009-04-10T11:04:00.006+05:302009-04-10T11:26:54.295+05:30

HVAC is an acronym that stands for Heating Ventilating Air Conditioning. HVAC is for Controlling temperature and humidity to bring comfort to occupants inside the certain spaces such as Office Buildings, Residential Towers etc. Air Conditioning refers the cooling and dehumidification of indoor air for thermal comfort. Air Conditioning is based on the principles of Thermo dynamics, Fluid Mechanics

Khaleel Ahamednoreply@blogger.com0