Questions about growing cloud forest orchids.

[Russell 99]

I've always wanted to grow various types of orchids and since I've moved to the mountainous area at 1300masl I've decided to try growing some cloud forest orchid, I was able to aquire some local ones as the land was being cleared for agricultural purposes. The problem with where I got the orchids and where I live is that the blowing wind is really really dry and the temperature is 23-18-15(rarely goes 15-only in winter months) Celsius and the area I got the orchids from have a temperature range from 20-18-14-9 Celsius, also the elevation is 1900/2000masl.

I have sloved the dry air problem by covering 3 sides with UV polythene the hood covered with 50% shade net and a 10x8 area left completely open(entrance).

Now I have only 2 problems

1. How can i lower the temperature range to the are I got the orchids initially.

2. I've heard that a lot of growers use ultrasonic atomizers to increase the humidity and create a suitable environment.
The problem is that ultrasonic atomizers are rarely or not available at all unless imported and importing isn't a solution these days. So I found a sprinkler that when connected to a motor would produce a fine mist or will just watering more frequently solve the problem.