1 BTU is the amount of heat required to raise the temperature of one pound of liquid water by one degree from 60° to 61° Fahrenheit at a constant pressure of one atmosphere. As a general rule we advise you to buy an Air Conditioner with a minimum 3,000BTUs as this is the minimum required to cool a small room (10sq/m) on a hot day. Medium rooms (24sq/m) need around 10,000BTUs and larger rooms and office spaces (36sq/m) require around 15,000BTUs.
Is this "enough"...?
Internal dimensions of a 40-foot container: 12.022m x 2.353m
Surface area = 12.022 x 2.353 = 28.29m2
Given that some of the internal space will be "used up" for walls and furniture,
I expect that 9k BTU will be "enough" for a container.
How to Install a Ductless Mini-Split Air Conditioner - This Old House
https://youtu.be/ozaw9QhxkQU
9000 BTU Panasonic Powered Wall Mounted Split Air Conditioner with Heat Pump 5 meters pipe kit and 5 years warranty https://www.appliancesdirect.co.uk/p/eiq-9wminv/electriq-eiq9wminv-air-conditioner
What is a BTU?
1 BTU is the amount of heat required to raise the temperature of one pound of liquid water by one degree from 60° to 61° Fahrenheit at a constant pressure of one atmosphere. As a general rule we advise you to buy an Air Conditioner with a minimum 3,000BTUs as this is the minimum required to cool a small room (10sq/m) on a hot day. Medium rooms (24sq/m) need around 10,000BTUs and larger rooms and office spaces (36sq/m) require around 15,000BTUs.
Is this "enough"...? Internal dimensions of a 40-foot container: 12.022m x 2.353m Surface area = 12.022 x 2.353 = 28.29m2 Given that some of the internal space will be "used up" for walls and furniture, I expect that 9k BTU will be "enough" for a container.
https://www.aircon247.com/g/1255368/where-to-best-position-an-air-conditioner-.html http://www.yougen.co.uk/blog-entry/1679/How+'28'26+where'29+to+position+your+air+source+heat+pump
We need to "MVP" this.