25 results
- 2020
A fully functional cold chain system must be available in country to ensure the uninterrupted availability of quality vaccines to service-delivery levels. Cold chain equipment is therefore of...
- 2020
Join us for a free, non-commercial presentation on the past, present and possible future(s) for solar vaccine refrigeration. Led by Steve McCarney, Director of Sunny Day LLC, this interactive...
- 2020
I have been working on solar electric cooking systems which are appropriate for the developing. The system I think has the most promise is a solar direct system,no batteries. Thermal storage...
- 2018
Hello,
I am brand new to TechNet-21 so this will be my first posting.
I am trying to find an SDD (Solar Direct Drive) freezer which will maintain -10C and below. The product I need to store in...
- 2018
Dear TechNet Community,
On Tuesday 10th July 2018, the WHO Performance, Quality and Safety (PQS) Working Group conducted its first face-to-face technical consultation with manufacturers of PQS...
- 2018
Dear TechNet-21 communty,
I would like share with you some pictures of the installation process of 37 SDD that we are doing in Colombia.
Best regards.
- 2017
We are happy to announce the latest version of the Total Cost of Ownership tool for cold chain equipment (v1.4) is now available to download and use. If you have been using an earlier version of the...
- 2017
To ensure that solar direct drive (SDD) appliances can keep vaccines at acceptable temperatures continuously, the installed photovoltaic array often produces excess power that is not used by the...
- 2017
WHO and UNICEF have just published a new evidence brief on solar direct-drive (SDD) vaccine refrigerators and freezers. It includes case studies from Tanzania, Colombia and Kenya, as well as an...
- 2016
Dear TechNet members, I'm putting together a document on the performance of solar direct-drive (SDD) vaccine refrigerators and would like to request your assistance. If you have experience of SDD...
- 2016
Outil de calcul du Coût Total de Possession d’équipements de la chaîne du froid
L’outil de calcul du Coût Total de Possession (CTP) d’équipements de la chaîne du froid a été...
- 2016
Among the TECHNET postings on cold-chain equipment there are embedded remarks pointing towards the need to make vaccine refrigeration simpler and less expensive to procure, more responsive to energy...
- 2016
I was recently looking at the “System Sizing tool 3/3” in a 2DI3 “Technical evaluation and Methodology” a unicef publication. The publication originated from a 2DI3 SDD industry meeting.
The...
- 2016
PATH’s Total Cost of Ownership (TCO) tool for cold chain equipment is now available for download and use.
The TCO tool is designed to help countries compare and understand the costs associated...
- 2015
WHO and UNICEF have just released a new joint publication on solar fridges and freezers that is intended to provide managers in national immunization programmes with guidance on how to implement...
- 2015
The percent difference between the gross refrigerator (ILRs and SDDs) volumes quoted in the PQS Catalogue and the net vaccine storage volume varies from 29.6% to 88.6 %. This is a wide variation for...
- 2015
Sun Frost developed a hybrid refrigerator/ice pack freezer, the FRH-3. The Sun Frost FRH-3 has a SDD freezer and a battery powered refrigerator. The SDD freezer is the same size as our F-1...
- 2015
The decision of a National Immunization Programme to use Solar Direct Driven (SDD) Refrigerators instead of Solar Panels to run refrigerators I think is like presenting challenges in the so called...
- 2014
Two solar direct drive ice pack freezers have been successfully tested for seven months in Columbia. The F-1 was manufactured by Sun Frost and a second freezer was produced by Sun Danzer. The...
- 2013
The data given for solar-powered refrigerators in the PQS sheets is not given consistently enough so that comparisons of various models can be made.
The data needed for a fair comparison most...
- 2013
Sun Frost has been building vaccine storage refrigerators for the past 20 years. Sun Frost is now building a direct-drive ice pack freezer. Some new technologies incorporated into the design allows...
- 2013
Hi,
I would greatly appreciate your expert opinion on a technical question regarding extensive field monitoring of solar generator. The objective is to carry out a long-term, rather in-depth field...
- 2011
[i]With many thanks to John Lloyd for this post.[/i]
[u]Countries that currently use absorption refrigeration (gas, electric or kerosene-powered) are facing increasing pressure to switch to solar...
- 2011
Recently, I have seen a number of relatively large RFQ’s for direct drive refrigerators. These refrigerators do not have an ice pack freezer. From past feed back from our customers and WHO we have...
- 2009
by Joanie Robertson, Technical Officer, PATH In March 2009, six companies submitted designs to PATH in response to its Battery-Free Solar Refrigerator Challenge. Product designs that meet desired...