Downloaded 156 times
Uploaded byAshif AR
Chilled beam
The document discusses chilled beam systems in HVAC, detailing types such as passive, active, and multi-service beams, along with their operational principles and benefits. A case study on Astra Zeneca highlights practical applications and advantages, including energy efficiency and minimal maintenance. It also addresses the higher initial costs and limited industry awareness as challenges to adoption, particularly in India.
More Related Content
Chilled beam
- 1. CHILLED BEAM BASILPAUL basilpaulthuruthy92@gmail.com M.A. COLLEGE OF ENGINEERING KOTHAMANGALAM 1 30/9/2014
- 2. CONTENTS • INTRODUCTION • TYPES OF CHILLED BEAMS • CASE STUDY • ADVANTAGES AND DISADVANTAGES • CONCLUSIONS • REFERENCES 2 30/9/2014
- 3. 3 30/9/2014 INTRODUCTION • HVAC system to heat or cool buildings • Pipes of water passed through a heat exchanger • Air around beam chills and denser air falls to the floor • Warmer air moves up • Water can carry more energy than air • A metal pipe of water 1 inch dia can carry same energy as a 18 by 18 inch metal duct of air
- 4. 4 30/9/2014 TYPESOF CHILLED BEAMS • PASSIVE CHILLED BEAM • ACTIVE CHILLED BEAM • MULTI SERVICE CHILLED BEAM
- 5. 5 30/9/2014 PASSIVECHILLED BEAM • Simple device • Natural convection and radiation • Air flow based on temperature difference • Cooling output regulated by flow of chilled water • Not connected to ventilation system
- 6. 6 30/9/2014 ACTIVECHILLED BEAM • Grater cooling capacity • Primary air flow introduced • Control humidity and temperature hence high IAQ • Very quiet operation • High ventilation rate
- 7. 7 30/9/2014 MULTISERVICE CHILLED BEAM • Active or passive type • Integrate services like lighting, speaker systems ,sprinkler heads • Different services can be pre-fabricated off-site • Plug and play connections • Save time and hence cost of project
- 8. 8 CASE STUDY-ASTRAZENECA,BOSTON 30/9/2014 • In operation since 2000 • Serve offices, laboratories, cafeteria ,atrium • No condensation issues • Cleaning was rarely required • 100% outside air system provides ventilation • They are planning for a new building using chilled beam
- 9. 9 30/9/2014 ADVANTAGESAND DISADVANTAGES • Simple to design and control • Constant volume supply air system • Almost no maintenance • Minimum cleaning • Reduction in energy use • Not well known in our Industry • Higher construction cost • Affects traditional ceiling Appearance • Dew point concerns
- 10. 10 30/9/2014 CONLUSIONS • The initial cost is higher • Construction cost and type of building decides type of chilled beam to be used • The operating and maintenance cost are less • Provides high thermal comfort • Suitable for energy efficient and green buildings • Not well known to our industry • Huge scope in India
- 11. 11 30/9/2014 REFERENCES 1. Can Chen, Wenjian cai, Youyi Wang, Chen Lin(2014),Energy and Buildings: Performance comparison of heat exchangers with different circuitry arrangements for active chilled beam applications, vol.79,pages 164-172 2. Can Chen, Wenjian Cai, Karunakaran Giridharan, Youyi Wang(2014),Applied energy: A hybrid dynamic modeling of active chilled beam terminal unit, volume 128 , pages 133-143 3. ashrae.org 4. Trane Engineers Newsletter volume 38–4 5. www.rehva.eu 6. www.reuters.com 7. www.semcoinc.com 8. www.halton.com
- 12.