Pearl River Tower- World tallest Zero Energy building Pearl River tower is world’s tallest Zero Energy Building (ZEB) at Guangzhou, China. Guangz Guangzhou hou is rankin ranking g 8th in world’ world’s s worst worst Air city according according to the most recent WHO data. It is second only to Beijing. As industrial production and and traf traffi fic c withi thin Guan Guangz gzho hou u cont contin inue ue to incr ncrease, ase, more ore peo people ple are are su suff ffer eriing fro from shor sh ortn tne ess of bre breath, ath, coug cough hing, ing, diz dizzine ziness ss,, weakness and nausea. Considering this, need of zero emission building has arise. So the the Chin Chines ese e gove govern rnme ment nt set set the the goal goal of redu reduci cing ng carb carbon on emis emissi sion on in futu future re.. Chin China a Nation National al Tobacc Tobacco o Corpor Corporati ation on develo developed ped Pearl Pearl River River Tower. Tower. China National Tobacco Company Company (CNTC) decided to locate their new headquarters in Guangzhou. Pearl River Tower is an envi enviro ronm nmen enta tall init initia iati tive ve take taken n to buil build d ZE ZEB B str structu ucturres. es. It is indep ndepe enden ndentt from from out outside side electricity resources. The idea behind it is that energy energy produc produced ed by on site site renew renewabl able e energy energy sources is equal to the amount of energy consumed by the building. Combinational use of solar kits and wind turbine fulfills basic energy required. This skyscraper is 71 Story building, 2.2 Million Square Feet area and 1,016 Feet Tall. They had undertaken following steps to become ZEB building. •
Reduction Chilled radiant is used is used instead instead of normal normal ventilati ventilation on a nd air conditioning. Disp Displlace acement ment vent entilat ilatiion
provides only fresh air which is cooled by the chilled-water system. Radi Radiant ant Slab Slabs s help helps s to main mainta tain in temp temper erat atur ure e insi inside de.. It enhan enhance ces s daylight and cools for under floor ventilation system. High performance glazing helps insulate the building’s interior. Highly efficient lighting and office equipment consumes only 1/3 rd of regular electricity. electricity. These new LED lights emit less heat and gives brighter light than regular light bulbs. Waterless Urinals and low flush toilets decrease water demand. •
Reclamation Reclamation of Energy Unused Energy is reclaimed from chiller heat heat gener generato atorr heat heat exhaus exhaustt air heat. heat. Hot air is vented in and is drawn out through a stack effect. Geothermal Heat Sinks are also used
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Passive Absorption Advanced wind and solar technologies were integrated into the design of this skyscraper in order to generate electricity. S un path diagrams generated to study location of PV panels on the building wall .Wide Solar panels are mounted on the roof and front wall also. It capture sun energy and coverts it to electrical-energy.
An innova innovativ tive e featur feature e of the buildi building’ ng’s s wind wind centri centric c design design is four four openings run through the building. These opening are funnel shaped. Due Due to this this,, air air sp spee eed d incr increa ease ses s as it runs runs thro throug ugh h the the buil buildi ding. ng. Curvil Curviline inear ar struct structure ure of openin openings gs also also relie relieved ved pressur pressure e from from wind wind loads. loads. Vertic Verticalal-axi axis s wind wind turbin turbines es are placed placed in these these openin openings gs to generate electricity. electricity. Hydrogen fuel cells are used to store surplus generated energy. •
Generation-
System of linked microturbines is used to fulfill extra energy need. It can run off of any fossil fuel. Due to this system Pearl River tower becomes the Net Zero tower. For zero energy building structure, it cost costs additional $13 million for construction. Energy consumption is reduced by about 60%. Its additio additional nal constr construct uction ion cost cost will will be earned earned back back withi within n 5 Years Years because of Savings From:
Reduced Electricity Bills
Lower Maintenance costs
Extra Rent from Space Not Used for Air Conditioning Ducts
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