Possible add ons for our shelter

Here is a conversation bewteen two teammates about the shelter. Add ons to improve the health, safety and comfort of the users.

me:  would you consider ventilation of the shelter to part of the health and safety.
 Ciaran:  well, it would come under the comfort, but h&s probably
 me:  should we include it in our design
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 Ciaran:  yeah. a vent in either side
 me:  cool but we also have to consider the heat loss from the vents
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 Ciaran:  sod all. they can be sealed off incase too much heat is escaping
 me:  awesome, and one more thing,
I think we should include a flexible pipe that we can use to attach to warm air vent and cooling machines just like the parasite.
Because at the moment our shelter looks promising but it won't stand out from the other shelters that will be built.
 Ciaran:  johnnie, there are no warm air supplies in the middle of a park... and the only problem we'll have is cooling the thing down, not heating it up
 me:  true there are no warm air supplies in the middle of a park but I wasnt talking about the park .
I was thinking about the city
remember those pictures of the air vents in the city on the blog?
 Sent at 16:54 on Wednesday
 Ciaran:  yeah, but that idea isn't really origonal cause they gave it to us
 me:  yeah but what about the cooling part.
in the summer we can attach the shelter to an air conditioner in the alley way.
 Ciaran:  computer fan attached to a battery in one of the vents
 me:  I dont know sounds expensive.
and noisy
might attract attention
 Ciaran:  virtuall n no noise €10
 me:  batteries and fan?
 Ciaran:  ok €15 but that about it
 me:  would they be heavy and bulky to instsall
???
 Ciaran:  nope . get a small fan to get some airflow. bout 10x10 cm or less
 me: 
well that sounds like a great idea, we can tell the group tommorow.
 Ciaran:  yeah, thats fine by me
 Sent at 17:04 on Wednesday