The summer heat may be sapping the energy of people in Japan, but it is firing up several sectors of the economy as demand increases for products ranging from beer and air conditioners to bedding said to help keep sleepers cool at night.Beer and beverage makers are moving to boost production, reflecting surging demand amid the extremely hot weather nationwide.In late July, Kirin Brewery Co. lifted the month's output of its beer products by 20 percent from the previous year after seeing a rise in demand since mid-July. The brewery had originally planned to increase production by 10 percent i…READ FULL ARTICLE