Changeset 186

Timestamp:

Mar 9, 2004, 4:33:47 PM (22 years ago)

Author:

jhoblitt

Message:

add power estimate numbers

File:

• trunk/doc/design/datasys_cost.tex (modified) (2 diffs)

trunk/doc/design/datasys_cost.tex

@@ -1 +1 @@
 % Copyright (C) 2004  Joshua Hoblitt
 %
-% $Id: datasys_cost.tex,v 1.3 2004-03-10 00:59:27 jhoblitt Exp $
+% $Id: datasys_cost.tex,v 1.4 2004-03-10 02:33:47 jhoblitt Exp $
 
 \documentclass[panstarrs,psreport]{panstarrs}
@@ -210 +210 @@
 \section{Power Consumption}
 
-\tbd{Total power consumptions is TBD}
+\subsection{Nodes}
+
+The Pan-STARRS Prototype IPP Computational/Storage Node draws $\sim600w$ when idle.  As this is the idle load and the power consumption of computer components is rapidly increasing we should budget for $\sim750w$ per node.
+
+\begin{center}
+85 nodes
+\begin{tabular}{lr}
+Item            &Estimated Power Consumption\\
+\cline{1-2}
+Nodes           &63,750w\\
+Network + Misc. &25,000w\\
+\cline{1-2}
+Total           &88,750w\\
+\end{tabular}
+\end{center}
+
+\begin{center}
+132 nodes
+\begin{tabular}{lr}
+Item            &Estimated Power Consumption\\
+\cline{1-2}
+Nodes           &99,000w\\
+Network + Misc. &25,000w\\
+\cline{1-2}
+Total           &124,000w\\
+\end{tabular}
+\end{center}
+
+\subsection{Air Conditioning}
+
+It takes 1ton of A/C to remove 12kBTU of heat.
+
+\begin{center}
+\begin{tabular}{lr}
+Heat Generated  &A/C Load\\
+\cline{1-2}
+88,750w         &25.242tons\\
+124,000w        &35.268tons\\
+\end{tabular}
+\end{center}
+
+\subsection{Total Power Consumption}
+
+Assuming that 1ton of A/C requires 1kw of power.
+
+\begin{center}
+\begin{tabular}{lrr}
+Item            &85 nodes       &132 nodes\\
+\cline{1-3}
+Nodes + Net + Misc.     &88,750w        &124,000w\\
+A/C             &25,242w        &35,268w\\
+\cline{1-3}
+Total           &113,992w       &159,268w\\
+\end{tabular}
+\end{center}
+
+\subsection{Cost Estimate}
+
+This Billing estimate is from Maui Electric Company, Ltd. (MECO) for schedule "J" service with a power factor of 0.9 (MECO refers to this as a power factor of 90\%) based on Feburary, 2004 rates.
+
+\begin{center}
+\begin{tabular}{lr}
+Peak Demand&Estimated Price\\
+\cline{1-2}
+115kw           &\$13,000 per month\\
+160kw           &\$18,100 per month\\
+\end{tabular}
+\end{center}
 
 \section{Misc}