(Noob Need Help) Simple Refrigeration Design

[eSwYeL]

Hello, I want to make a simple chillier but got no knowledge on the engineering side. (Please refer to my humble drawing):-

- The room temp is 38c
- The evaporator unit is just a simple cooper tube that i coil together
- The Condenser also made from simple coiled cooper tube.
- The Condenser is submerged in high flow rate water to chill.
- I would like to turn 4x6ft off water into ice block.

My Questions is:-

1) What is the right length and size of the cooper tube for the condenser and evaporator side?
2) What type of TXV do i use for 1 hp Compressor?

Please help me with your comment and improvement that i can make to make the simple chillier more efficient.

Thank you in advance.