(1) The commissioners appointed pursuant to this chapter shall have the authority to utilize all revenues derived from the hospital in the operations of the hospital including repairs and additions thereto or the construction thereof.
(2) All funds derived from the use of the hospital shall be segregated into a hospital fund, which fund shall be used exclusively in the operations of the hospital by the commissioners.
(3) Moneys in the hospital fund shall not be mingled with other funds of the city and shall be handled exclusively by the commissioners.
(4) The commissioners shall receive no salary for their services, but they shall be reimbursed from the hospital fund for actual expenses incurred in the performance of their duties.