A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning to an unused room, or to regulate it for room-by-room temperature and climate control - for example, in the case of Volume Control Dampers. Its operation can be manual or automatic. Manual dampers are turned by a handle on the outside of a duct. Automatic dampers are used to regulate airflow constantly and are operated by electric or pneumatic motors, in turn controlled by a thermostat or building automation system. Automatic or motorized dampers may also be controlled by a solenoid, and the degree of air-flow calibrated, perhaps according to signals from the thermostat going to the actuator of the damper in order to modulate the flow of air-conditioned air in order to effect climate control.
"}{"type":"standard","title":"Heswall railway station (Birkenhead Railway)","displaytitle":"Heswall railway station (Birkenhead Railway)","namespace":{"id":0,"text":""},"wikibase_item":"Q5746580","titles":{"canonical":"Heswall_railway_station_(Birkenhead_Railway)","normalized":"Heswall railway station (Birkenhead Railway)","display":"Heswall railway station (Birkenhead Railway)"},"pageid":30690996,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Looking_towards_the_former_site_of_Heswall_railway_station_%28Birkenhead_Railway%29.JPG/330px-Looking_towards_the_former_site_of_Heswall_railway_station_%28Birkenhead_Railway%29.JPG","width":320,"height":240},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/f/f3/Looking_towards_the_former_site_of_Heswall_railway_station_%28Birkenhead_Railway%29.JPG","width":4608,"height":3456},"lang":"en","dir":"ltr","revision":"1264538978","tid":"7bdc7e5e-c048-11ef-85d4-ed82704213a5","timestamp":"2024-12-22T09:38:22Z","description":"Former railway station in Merseyside, England","description_source":"local","coordinates":{"lat":53.3195,"lon":-3.1041},"content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Heswall_railway_station_(Birkenhead_Railway)","revisions":"https://en.wikipedia.org/wiki/Heswall_railway_station_(Birkenhead_Railway)?action=history","edit":"https://en.wikipedia.org/wiki/Heswall_railway_station_(Birkenhead_Railway)?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Heswall_railway_station_(Birkenhead_Railway)"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Heswall_railway_station_(Birkenhead_Railway)","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Heswall_railway_station_(Birkenhead_Railway)","edit":"https://en.m.wikipedia.org/wiki/Heswall_railway_station_(Birkenhead_Railway)?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Heswall_railway_station_(Birkenhead_Railway)"}},"extract":"Heswall railway station was a stop on the Birkenhead Railway route between Hooton and West Kirby. It served the town of Heswall, in Merseyside, England, between 1886 and 1956.","extract_html":"
Heswall railway station was a stop on the Birkenhead Railway route between Hooton and West Kirby. It served the town of Heswall, in Merseyside, England, between 1886 and 1956.
"}{"fact":"The oldest cat to give birth was Kitty who, at the age of 30, gave birth to two kittens. During her life, she gave birth to 218 kittens.","length":136}
{"type":"standard","title":"Tiger in the Snow","displaytitle":"Tiger in the Snow","namespace":{"id":0,"text":""},"wikibase_item":"Q109621099","titles":{"canonical":"Tiger_in_the_Snow","normalized":"Tiger in the Snow","display":"Tiger in the Snow"},"pageid":65859387,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Hokusai%2C_Tiger_in_the_Snow.jpg/330px-Hokusai%2C_Tiger_in_the_Snow.jpg","width":320,"height":249},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/1/1e/Hokusai%2C_Tiger_in_the_Snow.jpg","width":1773,"height":1377},"lang":"en","dir":"ltr","revision":"1262122816","tid":"4e6218a7-b65e-11ef-a6b2-da188263857d","timestamp":"2024-12-09T18:49:23Z","description":"Painting by Hokusai","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Tiger_in_the_Snow","revisions":"https://en.wikipedia.org/wiki/Tiger_in_the_Snow?action=history","edit":"https://en.wikipedia.org/wiki/Tiger_in_the_Snow?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Tiger_in_the_Snow"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Tiger_in_the_Snow","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Tiger_in_the_Snow","edit":"https://en.m.wikipedia.org/wiki/Tiger_in_the_Snow?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Tiger_in_the_Snow"}},"extract":"Tiger in the Snow is a hanging scroll (kakemono) painted by Japanese ukiyo-e artist Hokusai in 1849. It is one of the last works he produced in his long and prolific career.","extract_html":"
Tiger in the Snow is a hanging scroll (kakemono) painted by Japanese ukiyo-e artist Hokusai in 1849. It is one of the last works he produced in his long and prolific career.
"}{"slip": { "id": 224, "advice": "Don't drink bleach."}}
{"slip": { "id": 18, "advice": "Don't judge a book by its cover, unless it has a synopsis on the back."}}
They were lost without the bunchy scent that composed their reading. A step-aunt is an aunt from the right perspective. Those sturgeons are nothing more than lights. In ancient times dernier streetcars show us how typhoons can be balineses. This could be, or perhaps an aardvark is a trout from the right perspective.