An enclosure for providing liquid film cooling to a plurality of heat generating components, the enclosure comprising: a chassis ; a plurality of cassettes that are vertically positioned and spaced apart from each other in the chassis , wherein each cassette of the plurality of cassettes is slidable in and out of the chassis , and wherein a first cassette of the plurality of cassettes includes one or more heat generating components of the plurality of heat generating components; a sump formed below a bottom surface of the chassis for storing a liquid to be supplied to the plurality of heat generating components; a first pump placed below the chassis for drawing the liquid from the sump ; a plumbing system to receive the liquid from the sump by way of the first pump ; a plurality of tube plates fluidly connected to the plumbing system to receive the liquid, wherein a first tube plate of the plurality of tube plates is vertically positioned between the first cassette and a second cassette of the plurality of cassettes, and wherein the first tube plate of the plurality of tube plates directly sprays the liquid onto the one or more heat generating components by way of nozzles embedded thereon, and wherein a portion of the liquid that is sprayed onto the one or more heat generating components is collected in the sump due to vertical orientation of the first cassette and a remaining portion of the liquid is evaporated into vapors upon contact with the one or more heat generating components; and a heat exchanger , placed below the chassis to condense the vapors into condensed liquid upon contact with the heat exchanger , wherein the condensed liquid is collected in the sump , and wherein the enclosure is hermetically sealed to prevent the vapors of the liquid from escaping the enclosure . a chassis ; a plurality of cassettes that are vertically positioned and spaced apart from each other in the chassis , wherein each cassette of the plurality of cassettes is slidable in and out of the chassis , and wherein a first cassette of the plurality of cassettes includes one or more heat generating components of the plurality of heat generating components; a sump formed below a bottom surface of the chassis for storing a liquid to be supplied to the plurality of heat generating components; a first pump placed below the chassis for drawing the liquid from the sump ; a plumbing system to receive the liquid from the sump by way of the first pump ; a plurality of tube plates fluidly connected to the plumbing system to receive the liquid, wherein a first tube plate of the plurality of tube plates is vertically positioned between the first cassette and a second cassette of the plurality of cassettes, and wherein the first tube plate of the plurality of tube plates directly sprays the liquid onto the one or more heat generating components by way of nozzles embedded thereon, and wherein a portion of the liquid that is sprayed onto the one or more heat generating components is collected in the sump due to vertical orientation of the first cassette and a remaining portion of the liquid is evaporated into vapors upon contact with the one or more heat generating components; and a heat exchanger , placed below the chassis to condense the vapors into condensed liquid upon contact with the heat exchanger , wherein the condensed liquid is collected in the sump , and wherein the enclosure is hermetically sealed to prevent the vapors of the liquid from escaping the enclosure . <EOS>