Desikan Bharathan
Engineers at 17 Ave, Denver, CO

5925291, Jul 20, 1999

Mar 25, 1997

8/824236

Desikan Bharathan - Lakewood CO
Yves Parent - Golden CO
A. Vahab Hassani - Golden CO

Midwest Research Institute

B01F 304

261 691

A direct contact condenser having a downward vapor flow chamber and an upward vapor flow chamber, wherein each of the vapor flow chambers includes a plurality of cooling liquid supplying pipes and a vapor-liquid contact medium disposed thereunder to facilitate contact and direct heat exchange between the vapor and cooling liquid. The contact medium includes a plurality of sheets arranged to form vertical interleaved channels or passageways for the vapor and cooling liquid streams. The upward vapor flow chamber also includes a second set of cooling liquid supplying pipes disposed beneath the vapor-liquid contact medium which operate intermittently in response to a pressure differential within the upward vapor flow chamber. The condenser further includes separate wells for collecting condensate and cooling liquid from each of the vapor flow chambers. In alternate embodiments, the condenser includes a cross-current flow chamber and an upward flow chamber, a plurality of upward flow chambers, or a single upward flow chamber.

4474142, Oct 2, 1984

Mar 2, 1983

6/471392

Desikan Bharathan - Lakewood CO

The United States of America as represented by the United States
Department of Energy - Washington DC

F22B 2700

122 40

A vertical tube flash evaporator for introducing a superheated liquid into a flash evaporation chamber includes a vertical inlet tube with a flared diffuser portion at its upper outlet end. A plurality of annular screens are positioned in axially spaced-apart relation to each other around the periphery of the vertical tube and below the diffuser portion thereof. The screens are preferably curved upward in a cup-shaped configuration. These flash evaporators are shown in an ocean thermal energy conversion unit designed for generating electric power from differential temperature gradients in ocean water. The method of use of the flash evaporators of this invention includes flowing liquid upwardly through the vertical tube into the diffuser where initial expansion and boiling occurs quite violently and explosively. Unvaporized liquid sheets and drops collide with each other to enhance surface renewal and evaporation properties, and liquid flowing over the outlet end of the diffuser falls onto the curved screens for further surface renewal and evaporation.

5661670, Aug 26, 1997

May 25, 1995

8/452584

Desikan Bharathan - Lakewood CO
A. Vahab Hassani - Golden CO

Midwest Research Institute - Kansas City MO

G09B 900

364578

The present invention is a system and method for simulating the performance of a cooling tower. More precisely, the simulator of the present invention predicts values related to the heat and mass transfer from a liquid (e. g. , water) to a gas (e. g. , air) when provided with input data related to a cooling tower design. In particular, the simulator accepts input data regarding: (a) cooling tower site environmental characteristics; (b) cooling tower operational characteristics; and (c) geometric characteristics of the packing used to increase the surface area within the cooling tower upon which the heat and mass transfer interactions occur. In providing such performance predictions, the simulator performs computations related to the physics of heat and mass transfer within the packing. Thus, instead of relying solely on trial and error wherein various packing geometries are tested during construction of the cooling tower, the packing geometries for a proposed cooling tower can be simulated for use in selecting a desired packing geometry for the cooling tower.

6282497, Aug 28, 2001

Apr 15, 1999

9/292535

Desikan Bharathan - Lakewood CO
Yves Parent - Golden CO
A. Vahab Hassani - Golden CO

Midwest Research Institute - Kansas City MO

G01N 3100

702 23

A computational modeling method for predicting the chemical, physical, and thermodynamic performance of a condenser using calculations based on equations of physics for heat, momentum and mass transfer and equations of equilibrium thermodynamics to determine steady state profiles of parameters throughout the condenser. The method includes providing a set of input values relating to a condenser including liquid loading, vapor loading, and geometric characteristics of the contact medium in the condenser. The geometric and packing characteristics of the contact medium include the dimensions and orientation of a channel in the contact medium. The method further includes simulating performance of the condenser using the set of input values to determine a related set of output values such as outlet liquid temperature, outlet flow rates, pressures, and the concentration(s) of one or more dissolved noncondensable gas species in the outlet liquid. The method may also include iteratively performing the above computation steps using a plurality of sets of input values and then determining whether each of the resulting output values and performance profiles satisfies acceptance criteria.

5417052, May 23, 1995

Nov 5, 1993

8/147625

Desikan Bharathan - Lakewood CO
Mark S. Bohn - Golden CO
Thomas A. Williams - Arvada CO

Midwest Research Institute - Kansas City MO

F02C 600

60 3902

A hybrid combined cycle power plant including a solar central receiver for receiving solar radiation and converting it to thermal energy. The power plant includes a molten salt heat transfer medium for transferring the thermal energy to an air heater. The air heater uses the thermal energy to preheat the air from the compressor of the gas cycle. The exhaust gases from the gas cycle are directed to a steam turbine for additional energy production.

7373904, May 20, 2008

Jun 12, 2001

10/258719

Desikan Bharathan - Lakewood CO, US
Vahab Hassani - Golden CO, US

Midwest Research Institute - Kansas City MO

F27B 37/26

122489, 60653, 60679

A stratified vapor generator () comprises a first heating section (H) and a second heating section (H). The first and second heating sections (H, H) are arranged so that the inlet of the second heating section (H) is operatively associated with the outlet of the first heating section (H). A moisture separator () having a vapor outlet () and a liquid outlet () is operatively associated with the outlet () of the second heating section (H). A cooling section (C) is operatively associated with the liquid outlet () of the moisture separator () and includes an outlet that is operatively associated with the inlet of the second heating section (H).