Hybrid calorimeter cell

Patent metadata

Field	Value
Publication number	US-11221260-B2
Application number	US-201816040873-A
Country	US
Kind code	B2
Filing date	Jul 20, 2018
Priority date	Aug 31, 2017
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A calorimeter cell of a calorimetry system is provided, having a cell body having an internal region for receiving a first substance, the cell body being comprised of a chemically inert material, and a thermally conductive layer at least partially surrounding the chemically inert cell body. Furthermore, an associated calorimeter and method is also provided, including a sample cell, a reference cell, a thermostat in thermal communication with the sample cell and the reference cell, a first conductive wire, the first conductive wire having a first end connected to the thermostat and a second end connected to the sample cell, and a second conductive wire, the second conductive wire having a first end connected to the thermostat and a second end connected to the reference cell.

First claim

What is claimed is:

1. A calorimeter cell, comprising:
a cell body having an internal region for receiving a first substance, the cell body comprising a nickel-based alloy that is chemically inert, wherein the cell body has a thickness less than 0.0625 inches, wherein the chemically inert material is a nickel-molybdenum alloy or a nickel-chromium-molybdenum alloy; and
a thermally conductive layer at least partially surrounding the cell body that is more thermally conductive than the cell body.

2. The calorimeter cell of claim 1 , wherein, when a titrant containing a second substance is injected into the cell body, a heat produced from an exothermic reaction of the first substance and the second substance is conducted across a short path length of the cell body to the thermally conductive layer.

3. The calorimeter cell of claim 1 , wherein the cell body is attached to an access tube, the access tube having a pathway to receive an injection of a titrant into the cell body and wherein the access tube is made of a same chemically inert material as the cell body.

4. The calorimeter cell of claim 1 , wherein the thermally conductive layer is comprised of a material selected from the group consisting of: gold, aluminum, copper, and silver.

5. The calorimeter cell of claim 1 , wherein the thermally conductive layer is adhered to an exterior surface of the cell body.

6. The calorimeter cell of claim 1 , wherein the chemically inert material has a low thermal conductivity less than 100 W/mK.

7. The calorimeter cell of claim 1 , wherein a thickness of the thermally conductive layer is greater than a wall thickness of the cell body.

8. A calorimeter comprising:
the calorimeter cell of claim 1 ; and
a reference cell, wherein the calorimeter cell and the reference cell share a common heat sink.

9. The calorimeter of claim 8 , further comprising:
a thermostat in thermal communication with the calorimeter cell and the reference cell;
a first conductive wire having a first end connected to the thermostat and a second end connected to the calorimeter cell; and
a second conductive wire having a first end connected to the thermostat and a second end connected to the reference cell.

Assignees

• Waters Technologies Corp

Inventors

• Russell Donald J
• Arnerich Anthony E
• Serrell David

Classifications

• G01K17/04 Primary

  Calorimeters using compensation methods {, i.e. where the absorbed or released quantity of heat to be measured is compensated by a measured quantity of heating or cooling} · CPC title

• G01N25/4866

  by using a differential method · CPC title

• G01N25/486

  Sample holders · CPC title

• G01N25/4853

  Details · CPC title