Hello all, I have an odd shaped kitchen diner, which a single vertical radiator fails to warm up so I am going to add a new type 22 radiator. We have a concrete floor so ideally we will locate the new one close to the old one. I've drawn a picture below but concerned that I am putting the new radiator in cubby hole so may not do a good job of heating the room although the kitchen part of the room doesn't really need to be that warm. The blue boxes are windows or french doors. Any thoughts?