The proceeds of the sale of revenue bonds shall be paid into the State Treasury to the credit of a special fund known as the Educational Facilities Authority Fund; shall be used solely for financing or refinancing of the cost of the educational facility project, except as hereinafter provided, and shall be disbursed to the participating institution of higher learning upon order of the State Treasurer, pursuant to such restrictions, if any, as the bond loan agreement and the resolution authorizing the issuance of the revenue bonds may provide. If the proceeds of the revenue bonds, by error of calculation or otherwise, shall be less than the cost of the educational facility project, unless otherwise provided in the bond loan agreement and the resolution authorizing the issuance of the bonds, additional revenue bonds may in like manner be issued to provide the amount of such deficit which, unless otherwise provided in the bond loan agreement and the resolution authorizing the issuance of the bonds, shall be deemed to be of the same issue and shall be entitled to payment from the same fund without preference or priority of the revenue bonds first issued for the same purpose. If the proceeds of the revenue bonds of any issue shall exceed the amount required for the purpose for which the revenue bonds were issued, the surplus shall be paid into a sinking fund, hereinafter established in Section 37-104-31, for the payment of the principal of and the interest on such revenue bonds.