Almost 150 jobs are set to be created as a global clean energy-tech company opens a headquarters in the county. Aira has officially launched its 1,300 sq m hub and training academy in Acorn Industrial Park, in Dartford, near the border with Crayford. The firm says it instals clean energy heat pumps to provide homes with heating that is “affordable and carbon emission-free.” The new facility will be used to teach thousands of people to work in the sales team and become designers, electricians and installers of heat pumps. Academy manager, Georgia Laws, said: “The official opening of our Crayfor…