Highland greenhouse btu cooling requirements?
Posted: Sat Jan 19, 2013 6:15 am
For christmas i built myself a greenhouse from scratch. Its 8ft long, 8 ft wide and it has a sloped roof going from 8ft to 5 ft. Wood frame, gravel floor, and the cold north wall is made entirely of wood. It is covered in 4 mil plastic. I will try to get up some pictures tomorrow.
It gets waay too hot! The hottest it has been is 106F! It cools down to the 80s and 90s if i prop the door open, but i know that wont be adequete in the summer and i also want to conserve humidity in the greenhouse. The lighting is bright and diffused through the plastic (just about perfect), so i dont want to cover it with shade cloth to reduce heat becasue i will also lose precious light. So, ive decided i need to get an air conditioner or swamp cooler before i can put any nepenthes or any of my other tropical houseplants inside. Ive sort of ruled out the swamp cooler because just about everyone ive talked to says they start to lose efficiency over 90 degrees,(correct me if they are wrong ) . And it will get about 30 degrees hotter than that in summer. So it has to be an air conditioner. Obviously i need one with a high enough btu rating to handle these high temps, but im getting mixed answers from btu calculators. Ive seen as low as 2000 BTUs and as high as 17,000. I have a limited budget and would prefer to get one only slightly stronger than i need rather than go overboard. And i am too far into this project to give it up now. Please help. Thanks in advance.
It gets waay too hot! The hottest it has been is 106F! It cools down to the 80s and 90s if i prop the door open, but i know that wont be adequete in the summer and i also want to conserve humidity in the greenhouse. The lighting is bright and diffused through the plastic (just about perfect), so i dont want to cover it with shade cloth to reduce heat becasue i will also lose precious light. So, ive decided i need to get an air conditioner or swamp cooler before i can put any nepenthes or any of my other tropical houseplants inside. Ive sort of ruled out the swamp cooler because just about everyone ive talked to says they start to lose efficiency over 90 degrees,(correct me if they are wrong ) . And it will get about 30 degrees hotter than that in summer. So it has to be an air conditioner. Obviously i need one with a high enough btu rating to handle these high temps, but im getting mixed answers from btu calculators. Ive seen as low as 2000 BTUs and as high as 17,000. I have a limited budget and would prefer to get one only slightly stronger than i need rather than go overboard. And i am too far into this project to give it up now. Please help. Thanks in advance.