Simsite® HusHeaters are efficient steam diffusers (Pre-Heaters) that enable companies to heat materials, or liquids quickly and silently without vibration.  Effectively, the Sims HusHeater is a silencer (like a gun silencer) on the end of a steam line.

Mechanical equipment used for heating water and other liquids through the introduction of steam into the liquid may be unnecessarily noisy.  And it is noisy... if it's the old-fashioned heater.  It is not noisy... if it's a Sims HusHeater. The HusHeater does its job without making a sound!  It is completely free of the destructive vibration that loosens rivets, opens seams and otherwise damages instruments. The HusHeater adds years to the life of tanks and control equipment.

In most plants, machinery must serve a double purpose. Not only must each machine perform its job, it must do so as quietly as possible, without vibration, grinding, screeching and clattering.

No one ever really grows used to the unnecessary noise of the typical plant. Noise pollution is a drain on the nerves. The mechanical equipment used to heat water and other liquids through the introduction of steam into the liquid can produce tremendous noise and vibration.

The Sims HusHeater goes about its job of heating processes without making a sound!  Moreover, the HusHeater diffuses the steam evenly and efficiently without vibration and noise.

The most common application of the Sims HusHeater is in heating processes in sugar refineries, paper mills and other plants.  Sims HusHeaters can also be used in filter boxes and hotwells.  The HusHeater can raise the temperature of condensate to any desired temperature (depending, on the amount of steam available and liquid throughput).


The advantages of the Sims HusHeaters:


  1. Eliminates nerve shattering noise

  2. Eliminates tank wrecking vibration

  3. Conserves maximum amount of heat in the available steam

  4. Efficiently heats liquids

  5. Lessens the burden on the heater by reducing temperature difference between feed-water discharge and heater exhaust.

  6. Reduces back pressure on auxiliaries

  7. Reduces the demand for steam consumption

  8. Increases the temperature of feed-water entering into the boiler.



How to install the HusHeater

Installation of the HusHeater is easily managed, but there are certain precautions which should be taken to insure trouble-free operation. Your HusHeater comes to you assembled, ready to screw onto a three-inch pipe. It can be fitted to other sizes of piping by means of reducers that step the pipe either up or down. An important note: if the nuts on the HusHeater are loosened for inspection, it is essential that they be tightened to the point where the spring washer is entirely fiat. There are no moving parts, so there is no need to disassemble for adjustments. When used in an open feed system, the HusHeater may be installed in any compartment of the filter box, but performance will be better if it is located in the clear filter water section.

When setting the heater into any tank, the edge of the HusHeater hood must be submerged to obtain proper mixing of the heated liquid and prevent surface noises. Complete submersion is better, but it is important not to have the HusHeater rest on the bottom of the tank. It should be suspended from the steam pipe, or rigid support and be completely clear of the tank base and walls. There must be room for free circulation of the liquid under, and around the HusHeater. The HusHeater is guaranteed to operate silently and efficiently if properly installed. It can and will rumble noisily if installed on the end of a gooseneck (Fig. 43). 

With the correct piping, allowing for a downward flow of steam, there will be neither noise nor vibration. The Sims HusHeater can be made of any suitable material to withstand service conditions. Typically, the efficient Sims pre-heater (HusHeater) is made of bronze.

Steam enters at the top of the HusHeater and flows downward through the inside of the center tube, black arrows; it traces an upward course on the outside of the tube, where it passes through a series of converging nozzles. Suction created by the high-velocity flow of steam through the nozzles draws the liquid (venturi effect), colored arrows, into the mixing chambers. The liquid is heated to the desired temperature by the condensing steam, after which it is discharge through the opening under the hood of the HusHeater. Throughout, the operation is silent and free from vibration.

How to order HusHeaters:

The Engineering Department at Sims offers you full assistance in ordering one, or more HusHeaters for your plant.  As the first step in putting an end to your problems of heating a liquid by the liberation of live steam into it, send our engineers the necessary points of information concerning service conditions.  Some operations may require more than one HusHeater to do the job properly.  Sims HusHeaters can be grouped together in clusters to provide greater throughput.  Some operations have required three and even four HusHeaters per line.

Here is the information our engineers will need to supply you with a silent, vibration-free HusHeater:

a.  Liquid to be heated;
b.  Pressure and volume of steam available;
c.  Dimensions of tank and normal liquid level;
d.  Throughput of tank;
e.  Normal inlet temperature;
f.  Desired temperature.

Case Histories:

An electric control system was employed at one plant to regulate the output and temperature of liquid heated in a process tank. The original heater vibrated so much that the delicate mechanism of the controls was upset. As a result, specifications were rarely met. The vibration problem ceased with the installation of a silent Sims HusHeater, and from then on the electric controls were reliable.

Coil heaters and jet heaters both were tried in heating sugar liquor in a cylindrical tank at a sugar refinery. With each type of heater, vibration was so strong that even the steel supports of the tanks shuddered visibly. Two 3-inch Sims HusHeaters were installed with these results: no vibration, steady performance, practically no operating noise.

A Sims HusHeater used in the filter box of a steamship’s open feed system greatly improved efficiency. The Chief Engineer wrote, "Using the Sims HusHeater, I find we have a gain of 14 degrees in feed water temperature, and a gain of 46 degrees in the tank. The 230 degrees F maximum temperature can easily be obtained with 5 to 6 pounds less back-pressure using the Sims HusHeater."